FBI Director James Comey reignited the factious debate over a so-called “Ferguson effect” on Wednesday, saying that he believed less aggressive policing was driving an alarming spike in murders in many cities.
Comey said that while he could offer no statistical proof, he believed after speaking with a number of police officials that a “viral video effect” — with officers wary of confronting suspects for fear of ending up on a video — “could well be at the heart” of a spike in violent crime in some cities.

