The only way to deal with them is to ignore and not respond to them. Any response at all generates dozens of steaming piles from them. If everyone ignores them, they have only each other to high five.
I completely agree. Last time in frustration I got into it with one the troll in question went running to the mods and I was threatened with suspension. My crime? I posted SCOTUS case summary citations and used the word ‘obot’ once.