are you really that worried about trolls? Seriously. They are not that bad unless you make them that bad. You dont have to destroy every troll we have. Ignore them and they leave.
The more control and "government" we have here, the more likely trolls are going to want to be here to fuck things up. Much like how telling a young child they are not allowed to watch a certain movie, or play a certain video game. It just reinforces that desire to watch or play. Get it?\