The internet certainly brings out the worse in some people. For all the benefits of the internet, I think this is the huge drawback which has exploded thanks to social media and the idea that our voices are all important and should be heard. I stay far away from politics on social media, there's no benefit. There's no discussion, it's always just a pissing match that in the end, makes no one look good and sometimes causes real hatred.
I've become friends with someone who I video game with. He requested me on facebook, but warned me that he's a troll. I was like.. "ok, whatever" but now I see it on facebook. I really don't like his actions. He purposely picks fights with people for fun on the comments. I kind of understand his "it's fun" argument. I like to troll myself from time to time, getting reactions out of people can be really fun, but purposely picking on random people on the internet specifically on political commentary is a bit ridiculous IMO.
I've kind of grown accustomed to the idea that if you are going to get involved in the comments section, don't expect civil conversation and don't take anything seriously from it. Therefore, don't get your emotions worked up because of the internet trolls.