We do not see the meaning in cooperation with people justifying racist killers and adherents of authoritarianism.
It is really easy to imagine enemies as monsters, inhumans, stupid animals who devoid of all human virtues and embody all vices. But this is an erroneous approach. All crimes and abominations are committed by «normal guys» who are «a bit wrong». There are not only monsters to hate. Good, honest, sincere, kind people sometimes deserved all this hate. When we say «all cops are bastards», we do not indicate their personal qualities. We point to the repressive function that they perform.