I was coming here to post about this too. More firsthand accounts in
this article.
It's horrifying. He blew up the government buildings and then went to that island and killed all those children. To stop them before they could taking political action that went against his beliefs. Killed before they were able to have a life, or make a mark on the world, or breed. It's heartbreaking and terrifying that a human being could plan and carry out something like this.
But I'm also appalled that The New York Times and other sources claimed that it was Islamic jihadists without any evidence and they were wrong. He was tall, fair skinned, blond, and Christian.