When you notice a comment by a troll, ignore them. Simple as that. I know it sucks to not say anything – and I know it’s bothersome, but these asshats thrive on your responses. That’s what they want – they want an online argument.
I mean, of course if you see a hateful comment and feel the need to say something, do it. I think that most of the time you can clearly tell the trolls apart from the dicks. Just ignore the trolls and eventually – they’ll go away. And if they don’t, fuck em.
They have to live with themselves. Remember that. That seems like punishment enough. (: