Coretta once said that while Martin had to be serious in public, he was a playful, humorous family man. See glimpses of that in these heartwarming images.

"While others were advocating for freedom by 'any means necessary,' including violence, Martin Luther King Jr. used the power of words and acts of nonviolent resistance, such as protests, grassroots organizing, and civil disobedience to achieve seemingly impossible goals," according to The King Center.