It must have felt good to come to that realization after experiencing some of the awful things and behavior that mean people have toward one another. Removing yourself from threads you don't like and letting people change themselves may be the best you can do. Good job recognizing that! On other threads, it's been said many times that the worst insult to an Internet troll is no responses.. ignoring them. Lots of people say things on the internet that they would never say to someone in real life. Sometimes they are having fun at other people's expense, sometimes they are hired corporations or governments to intimidate people with certain opinions, sometimes they are in a bad mood (due to any number of things, mental health, a bad day, etc.) and taking it out on others, etc. etc. You are wise not to waste your time and energy on negative mean threads. It's not worth it. Surround yourself with supportive pleasant people online as you would in real life! Empathy and considerate behavior are wonderful traits! It's people with those that you deserve to spend time with.