American police are way too quick to resort to violence. The figures on the number of people killed by police in the US versus the rest of the developed world are startling. We need real reform here.
But demonizing the police as "thugs," "pigs," and so on is no path to reform. It is the path to low-level warfare between the police and those most alienated from our current system. The more hostility towards the police is promoted, the more reason the police will have to fear being killed when dealing with such hostile people, and the more quickly they will resort to violence. And in this struggle, there is no doubt who will come out ahead: The police have resources that those prompted to violence against them simply lack.