I don't think anyone has actually condoned it !
Most simply have no empathy for the victims, and that's not the same thing. I'd prefer it not to have happened, obviously, but as has been said, if you like a spelling dog to long enough, it will wake up and bite you !
On a similar thread a couple of weeks ago, I quoted a government security advisor, who was concerned that "the British people will not simply put up with these attacks indefinitely. It's a matter of time before there is a reaction."
It seems he was right !