3 groups, many videos, many interpretations of DC encounter

A group of five black men shouting vulgar insults while protesting centuries of oppression. Dozens of white Catholic high school students visiting Washington for a rally to end abortion. And Native Americans marching to end injustice for indigenous peoples across the globe who have seen their lands overrun by outside settlers. The three groups met for just a few minutes Friday at the base of the Lincoln Memorial, an encounter captured in videos that went viral over the weekend — and again cast a spotlight on a polarized nation that doesn't appear to agree on anything.