So I'm walking on U Street just west of the Metro stop at about 4:50 PM yesterday, and I see this group of black youths and one hispanic youth on the sidewalk, and it looks like the hispanic guy and the black guy are about to fight. So I get as far away as possible and keep walking as quickly as I can, and when I turn around to see what was happening, the hispanic guy is laying on the ground in pain, and the group of black kids (all girls except for the one boy, I think) is laughing while walking away, and one of the black girls kicks the hispanic guy in the head for good measure.