Bullies, Hate, Anger because what has been established is being changed and people can't stand change... In these peoples mind they are told, heard or assume something because how they get it from others. This can be blamed on misinformation, Preference and Environment, which is clear sign where people get harmed because the argue to be better than others or show how strong they are but ultimately causes more problems than good. Specially when the Society promotes this or those that are out for attention get this and people get in their heads that its right to do horrible things to others.
Read more: For us to change Society, we must change ourselves