Sometimes we say things without thinking.
Then there are the times when we say things without saying anything at all.
But there are also the willfully aggressive types who steam into comments sections in order to enjoy their own particular form of Fight Club.
The problem with these so-called troll types is that their discourse doesn't always rise to the level of minimal grace or education. Instead, there's rabid invective, with spellings from the time of Chaucer. If you're lucky.