I am a diehard liberal, and am immune to facts and evidence.
People also need to keep an open mind that sometimes people react irrationally.
Back in law school a guy I knew was having an extended fling with a married classmate. Over time the pair got sloppy and her husband caught them.
He was in his mid forties and not a fighter, while her boyfriend was in his mid 20s and in excellent shape. Hubby was so outraged at witnessing his marital bed defiled that he challenged the young guy. Putting his hands on the young guy while he was busy was a definite mistake, as hubby got his head handed to him in a lopsided confrontation with a naked guy that only lasted a few seconds.
Did hubby keep a cool head? No. If you take the situation out of context, he acted foolishly in picking a fight he had almost no chance of winning. Sometimes, people do dumb things.