Idk if this is creepy. There is nothing mysterious to it, its just a horrible act of terrorism that mostly affected civilians with some militants caught in the spray.
I'm really sorry, but I'm not sympathising with anyone, but this method of attack is straight up terrorism, and you'd be agreeing if it had been perpetrated by al queda, Hezbollah or Hamas, and was a Pandora's box of future terrorism that the western world will now have to live with.
Acknowledging that some actions are terrible and unacceptable even when they are being done by 'our own side' is a decent society is able to do.