The Los Angeles Times argues that the national protests against police brutality following the deaths of Michael Brown and Eric Garner did not cause the execution-style murders of two New York City cops. Protests by themselves did not kill anyone. The anti-authoritarian, illiberal spirit of the current administration in the White House, coupled with the frequent, interventionist investigations of Attorney General Eric Holder, and the systematic defunding or diversion of border security and police resources have cast police officers into a negative light.
Furthermore, demonstrations from Ferguson, Missouri to New York (with Rev. Al Sharpton) have been defined not by peaceful dissent, but civil unrest, violent rhetoric, aggravated assault, and destruction of private property. Furthermore, escalated threats against civilians and police have gone unprosecuted, and a general consensus of accommodation instead of confrontation from city leaders like Mayor Bill de Blasio have increased the likelihood of unprecedented attacks against police.