Two NYPD cops get killed and 'wartime' police blame the protesters. Have we learned nothing?

Two NYPD cops get killed and 'wartime' police blame the protesters. Have we learned nothing?
 - America's nightmare of violence and racism got upended in New York City on ... This time, the bloody violence was clear, and the social-media threat ... Asian officer and a Hispanic officer of the New York Police Department (NYPD), ...