BuzzFeed News spoke to a protester who chanted for “dead cops” on Dec. 13, which was captured on video and has become a nationwide flashpoint. “We wanted to separate ourselves from people who just want to get a guy fired.”(VIDEO-AT-LINK) NEW YORK CITY — On Dec. 13, about 100 protesters splintered off from the #MillionsMarch in lower Manhattan — a huge, peaceful demonstration against police brutality — and headed up Sixth Avenue. They turned east on 32nd Street, and passed right under the window of Tom Dilello, a computer programer who works for a large bank. At about 4:41 p.m.,...