*chuckles*
The only remotely similar event involving so-called "Christianity" I can remember mass Jonestown suicide, which was forty years ago, and even then, the actual "religion" of that group was a hodge-podge of multiple religions (to the point that it could only be identified as it's own religion) and was pretty much a one-off occurrence. Furthermore, there's pretty much no reason for Christians to even attack people in the first place, since the Bible says that accepting Christ is a choice up to every person, and he wants people to truly love him of their own volition as opposed to being forced to.
The Koran on the other hand, actually calls for the death of anyone who does not accept Alah as their god, and prioritizes Christians, Jews (and literally every other religion), and homosexuals as their first targets. Most of the Muslims who are your neighbors usually don't take the Koran that far, but the real danger is that Islam will spread to the point that they will begin taking over governments (by becoming populace enough that they can pressure legislation and elect officials into office) who enforce Shira Law. Oh wait, that's already happening in Europe...
ISIS is going to claim responsibility for any mass murder that even remotely looks like Jihad, simply because they want to invoke fear and seem like they're unstoppable and powerful. As to whether or not the attack today ACTUALLY WAS an act of Jihad, I'll wait for the official confirmation of the suspect, but given what has been happening in Europe, it seems pretty likely.
ON TOPIC: Has anyone found video of the actual explosion going off? I'd imagine that since it was a concert, that there would be people who'd have their phones out recording. There has to be at least one phone that was pointed in the general vicinity...
[Infracted]