Although they can be very unpleasant, it is important to remember that they are human, and even if they exhibit some serious symptoms of very poor mental hygiene, they are probably not sociopaths. Only one percent of the population is sociopathic. The Freeper rate of sociopathy may be slightly higher, but still a small percentage. That is very important to realize, otherwise there would be no point in trying to have fun with them. Anyone who sticks up for Klinton is deranged.
Schoolyard bully redux .
I am aware, after working in psychiatric hospitals for years, that it is a fact that almost all negative behavior comes from very low self-esteem. Think of the Freeper as an irksome little brother. Do not stoop to the level of the Freeper. Tell him that you want him to rise to civility. Give him some ground rules for civil discourse.