They can't separate themselves from their arguments so disagreeing with them is just the same as calling them names in their eyes.
Madness string 4263
There is only one sin, and that is theft. When you kill a man, you steal his life. You steal his wife's right to her husband, his children's right to a father. When you tell a lie, you steal someone's right to the truth. There is no act more wretched than stealing.