DETROIT, Mich. — Hecklers shouting “Fire Pantaleo” interrupted both Mayor Bill de Blasio and New Jersey Sen. Cory Booker during Wednesday night’s Democratic debate. One protester could be heard chiming in during de Blasio’s opening statement, calling on Hizzoner to boot NYPD Officer Daniel Pantaleo, the cop who put Eric Garner in a deadly chokehold...