Evangelicals... why are you so harsh to Catholics?

The Apostolics Pentecostals try to be nice to them but we teach that their doctrine and anyone with the doctrine of the trinity is not right. We believe in one God and that Jesus is that God. I can see why people would be rude to them tho. because throughout history they have burned protestants and Apostolic Pentecostals for not believing in them, acussing them of heresy and hanging them or torturing them till the confess to believe in the trinity or until they die. When the Catholic church was in control we call that the dark ages. Horrible times, but now everyone is pretty much on even grounds concerning rights.