It hasn’t been a good year to be a cop in New York City, but at 12:30 Sunday morning at the gang-plagued Edenwald Houses in the Bronx, bad became infinitely worse. ... Then onlookers loudly did their best to escalate the incident — wishing the cops on the scene dead, among other ugly things. How many cops on the beat fear ending up as a scapegoat — as did Daniel Pantaleo, fired in the Garner case — and hesitate for a fatal split-second in responding to a lethal challenge? It doesn’t help that many cops believe, quite reasonably, they’ve been...