Gilroy shooter Santino William Legan posted racist rants on social media

The teenage gunman who opened fire on a California garlic festival posted hate-filled messages against mixed-race people and said he was "angry" just before his rage boiled over into bloodshed, it emerged Monday. "Why are you doing this?" one unidentified attendee of the annual Gilroy Garlic Festival gathering could be heard yelling seconds after Santino...