I want to chime in about the burden of etiquette. A few people here want to blame the victim of the harassment for "getting hurt." Responses like that are shallow excuses to do nothing about a problem. If that's your stance, either you don't care about this issue, or you're one of the people causing it. The people who do care aren't going to stop "letting it bother them." If you're a dick who picks on people in a game, you deserve to be called out and humiliated, and made to feel as horrible as the people you hurt. It's not the victim's fault for "letting it get to him (or her)."

This is a game. People come here for fun. If you can't have fun, then kindly GTFO so the people who enjoy this game can continue to do so. After all, if you're harassing people like the player in the OP's screenshots, don't kid yourself - you are not enjoying this game. You're addicted or sad, and you should probably find a better way to deal with those things.