445 - Anders Breivik & the 2011 Neo-Nazi Norway Attacks

On July 22nd, 2011, Norwegian alt-right gamer Anders Behring Breivik carried out the deadliest attack on Norwegian soil since WW2, when he detonated a car bomb in Oslo and then snuck onto the nearby island of Utoya and opened fire on a large group of teenagers attending a political summer camp. Why did he do this? And how was no one able to stop him?