After he learned that the Missouri chapter of the Ku Klux Klan was impersonating him in order to spread racist messages to kids, Mr. Rogers took them on — and won.

From 1977 to 1980, Joseph Paul Franklin traveled all over America to target victims who were Black or Jewish with a sniper rifle.

On November 8, 2017, a young Chinese man named Wu Yongning tried to do pull-ups off the side of a 62-story building. It was the last decision he ever made.

For more than 20 years, Michael Kent was a fervent white supremacist covered in hate tattoos. But that all changed when he met Tiffany Whittier and the pair struck up an unlikely friendship.

Known as "katsu ika odori-don," this bizarre delicacy showcases a freshly killed squid that "dances" when it's doused in soy sauce.

In November 1968, the White Panthers emerged as an anti-racist group that supported the Black Panthers.

Paleontologists said this dinosaur had a one-of-a-kind opening that was "shaped in its perfect, unique way."

The Queen frontman was known to call his 10 cats while on the road — and even reportedly left them everything in his will.

In an Andalusian warehouse, police found a collection of Nazi memorabilia beside 22 AK-47s.

Together with his depraved girlfriend Carol Bundy, Doug Clark terrorized sex workers along the Strip, murdering them and then defiling their lifeless bodies.

On December 12, 1910, Dorothy Arnold disappeared from New York City's Fifth Avenue while dress shopping. Her maddening case has never been solved.