I was very saddened when I heard this Friday night (spent Thursday and most of Friday secluded due to moronic air travel bullshit). I was lucky enough to not have to do the call out to all my friends, like with NYC, as they had all posted on FB by the time I looked at a computer.
The thing that disturbs me the most, is that this guy is convinced that this attack "had to happen". Violence is always a last resort, it should never be the first and he had more than ample opportunity to seek political solutions. Attacking a camp with kids and teens is never an option, that makes him no better than the "muslim extremist groups" he was seeking to exclude from his country.*
*I recognize that he was looking to keep more immigrants from the ME out of Norway, but given the recent killings of youth in Syria and Afghanistan, he's on par, IMO.