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A note expressing profound sadness while at the same time asking for privacy from the media is posted on the front door of the home of Jerad Miller's parents on Tuesday, June 10, 2014, in Lafayette, Ind. Miller and his wife, Amanda, on Sunday shot and killed two Las Vegas police officers and a person at a Wal-Mart. As police closed in at the store, Amanda Miller shot her husband several times with a handgun, killing him. She then shot herself in the head. When officers arrived, she was still breathing, and was taken to the hospital. She later died. (AP Photo/Journal & Courier, John Terhune) NO SALES

LAS VEGAS (AP) — Jerad Miller was ready to share his anti-government views with just about anyone who would listen, views that telegraphed his desire to kill police officers and his willingness to die for what he hoped would be a revolution against the government.

He told neighbors, television reporters and the Internet. Once, on the phone with the Indiana Bureau of Motor Vehicles, he threatened to "start shooting people."

If local or federal authorities were monitoring his online rants and increasingly sharp threats, they aren't saying — not with police still investigating what triggered Miller and his wife to gun down two officers and a third man Sunday before taking their own lives.

Steven Carver cries while attending a vigil near CiCi’s Pizza Monday, June 9, 2014 in Las Vegas. The vigil was held to honor two Las Vegas
Steven Carver cries while attending a vigil near CiCi's Pizza Monday, June 9, 2014 in Las Vegas. The vigil was held to honor two Las Vegas Metropolitan Police officers and a bystander who were killed on Sunday. (AP Photo/John Locher) (John Locher/AP)

Even if Miller had attracted the attention of law enforcement, authorities would initially have been confined to knocking on his door and starting a conversation to try to gauge whether he was a true threat. His opinions were free speech, protected by the First Amendment. And given limited resources and rules against creating government watch lists, it would be impossible to keep tabs on everyone who actively promotes beliefs that may — or may not — turn to violence.

"We can't go around watch-listing folks because they voice anti-government opinions, because they say law enforcement should be killed," said detective Rob Finch, who advocates using social media to monitor extremists in his work with the Greensboro, North Carolina, police department. "There are thousands of people out there that voice these things on the Internet every day. YouTube is filled with them."

Indeed, Miller took to Youtube and Facebook to broadcast his rhetoric.

"In this particular situation, I think we would all be kidding ourselves if we said the signs weren't there," Finch said.

Miller and his wife, Amanda, shot and killed two officers who were on their Sunday lunch break at a pizza parlor, then told patrons that they were starting a revolution, according to police. They went next to a nearby Wal-Mart, where Amanda Miller killed a shopper who confronted her husband before police arrived.

Cheri Rasmussen, left, prays with Las Vegas Metropolitan Police Lt. Roxanne McDaris after a vigil near CiCi’s Pizza Monday, June 9, 2014 in Las
Cheri Rasmussen, left, prays with Las Vegas Metropolitan Police Lt. Roxanne McDaris after a vigil near CiCi's Pizza Monday, June 9, 2014 in Las Vegas. The vigil was held to honor two Las Vegas Metropolitan Police officers and a bystander who were killed on Sunday. (AP Photo/John Locher) (John Locher/AP)

After a gun battle inside the store, Amanda Miller fatally shot her husband and then herself, police said.

Neither the FBI nor Las Vegas police would comment on whether they were aware of Jerad Miller's threats, and if so whether they took any action.

In January, Miller called a recorded help line of Indiana's motor vehicles bureau after he was pulled over in Nevada and found to have a suspended license from the state he had recently left. At the end of the call, Miller said, "If they come to arrest me for noncompliance or whatever, I'm just going to start shooting people," according to agency spokeswoman Danielle Dean.

Cheri Rasmussen, left, embraces Las Vegas Metropolitan Police Lt. Roxanne McDaris after a vigil near CiCi’s Pizza Monday, June 9, 2014 in Las Vegas.
Cheri Rasmussen, left, embraces Las Vegas Metropolitan Police Lt. Roxanne McDaris after a vigil near CiCi's Pizza Monday, June 9, 2014 in Las Vegas. The vigil was held to honor two Las Vegas Metropolitan Police officers and a bystander who were killed Sunday at a strip mall. (AP Photo/John Locher) (John Locher/AP)

The bureau contacted Nevada's Department of Public Safety and provided a copy of the recording, which the department's investigation division forwarded to a state-run threat analysis center on Jan. 22, spokeswoman Gail Powell said. The threat center forwarded the information to the Southern Nevada Counterterrorism Center, a combined project of federal, state and local authorities.

What happened next is unclear; the counterterrorism center did not immediately reply to a request for comment.

While it would have been hard to pick Miller out of the sea of other extremists, he did make efforts to identify himself publicly during a spring standoff between supporters of southern Nevada rancher Cliven Bundy and federal agents who wanted to round up Bundy's cattle.

This combination made with undated photos provided by the Las Vegas Metropolitan Police Department shows Jerad Miller, left, and his wife, Amanda Miller.
This combination made with undated photos provided by the Las Vegas Metropolitan Police Department shows Jerad Miller, left, and his wife, Amanda Miller. Investigators are looking into whether the Millers, who shot and killed two Las Vegas police officers and a third person over the weekend, had been at Cliven Bundy's Nevada ranch during a standoff earlier this year, police said Monday, June 9, 2014. (AP Photo/Las Vegas Metropolitan Police Department) (Uncredited/AP)

In an interview with a television reporter in April, Miller said he didn't want a violent confrontation, but "if that's the language they want to speak, we'll learn it."

Miller was kicked off the Bundy ranch after a few days because he made other protesters uncomfortable, according to Ryan Payne, who helped coordinate between the Bundy family and militia members who came to support them. The concerns: Miller was a felon in possession of a firearm; he made troubling statements Payne said he couldn't specifically recall but that departed from the movement's principle of "defense" of Bundy's ranch; and he was "just a little bit off."

 

Another militia leader gave the Millers a few hundred dollars — they said they sold everything to reach the ranch about 80 miles from Las Vegas — and they left.

"We had no inclination to believe that something like what happened would happen," Payne said.

Jerad Miller's television exposure could have caught the attention of authorities, said Mark Pitcavage, director of investigative research at the Anti-Defamation League, which tracks extremist groups.

"It is good practice for authorities to learn who these people are because these are people seemingly willing to get involved in an armed standoff," he said.

Even then, absent an overt criminal act, authorities would have been limited to a "knock and talk" conversation to see what threat Miller might pose. Federal guidelines restrict what kind of intelligence law enforcement can gather on suspected extremists, Pitcavage noted.

What's more, the U.S. government had until last week suspended a domestic terrorism taskforce. It disbanded following the Sept. 11, 2001, terrorist attacks, when the government's attention shifted to foreign militants.

Authorities would also have been limited in their response if the Millers' neighbors had called police, though apparently none was moved to do so.

At their apartment complex in a hardscrabble area of Las Vegas — where Miller would walk around in camouflage with a handgun visible on his hip — neighbors said Miller openly shared his hatred of police. But it wasn't clear that he intended to act.

"Jerad never directly told me he was going to go off and pop cops," said Drew Flory, who lived next door to the couple for about a month.

Meanwhile, at the Indiana home of Jerad Miller's mother, a sign on the door read: "We are profoundly saddened, confused and in shock over the senseless actions of our son and his wife."

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Associated Press writers Ken Kusmer in Indianapolis and Eric Tucker in Washington, and researcher Judith Ausuebel in New York contributed to this report.

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Contact Justin Pritchard at https://twitter.com/lalanewsman