Why do people troll in the internet?

It's because they can get away with it. When one is on the internet they are anonymous. No one truely knows who you are unless you choose to reveal it. Sure people create online identities and all that, but in my opinion, its are just another layer between the world and their true identity.

An interesting thing I noticed is that while some people like to present themselves as the best as they can (Touching up their photos in photoshop and act all nice) there are others who like to create an identity online just act as obnoxiously as possible. An example I can think of right is now is how some people on Youtube create accounts just to upload tons of offensive material and comments on their channels to piss people off.

But I've noticed that trolling tends to happen more in places where people can remain anonymous and not even have to create an online identity. http://www.omegle.com/ for example, is a site that picks another random user at random and lets you have a 1 on 1 chat. Chats are completely anonymous and no personal information is shared, unless you choose to share it with the other person. You can imagine what happens most of the time...

Btw, for those who do not know what an internet troll is: it is someone who posts controversial, inflammatory or irrelevant messages on the internet with the intent of provoking others.