* American Experience: Freedom Summer is a powerful documentary that recalls the brave and selfless actions of young activists, black and white, who flocked to Mississippi in 1964 in an attempt to shatter the foundations of white supremacy. 9 p.m., PBS.
* The new drama series Tyrant follows the self-exiled son (Adam Rayner) of a Middle Eastern dictator who leaves his comfy home in California to visit his homeland for a family member's wedding. Much turmoil ensues. 10 p.m., FX.
* Big Brother is the cockroach of TV: You just cannot eradicate it. Summer's guiltiest pleasure returns with a whole new batch of roomies who will try to get along with each other -- and fail miserably. 8 p.m., CBS.
* Chyler Leigh stars in the new action drama Taxi Brooklyn. She plays a detective who speeds around New York solving crimes with the help of a local cabbie (Jacky Ido). 10:01 p.m., NBC.
* Girl Meets World, a sequel to the beloved 1990s sitcom Boy Meets World, has Ben Savage and Danielle Fishel reprising their roles. Now they're parents, and the "girl" in the title is their tween daughter (Rowland Blanchard). 9:45 p.m., Disney Channel.
* Scandal star Tony Goldwyn leaves the White House for the lead role in Outlaw Prophet: Warren Jeffs. It's a film about the fundamentalist Mormon leader whose crimes against his own flock landed him on the FBI's "10 Most Wanted List." 8 p.m., Lifetime.
-- CONTRA COSTA TIMES