Truly sad.
May Allah have mercy on the dead and give victory to the oppressed.
This is something that will either be:
a) Fobbed off as "Collateral damage" or
b) Justified by the recent Nice attack
There will be a small minority who will call this cowardly act what it is.
People sometimes wonder what causes extremism. If anything makes me want to travel overseas and pick up a gun it is seeing my brothers and sisters being mercilessly slaughtered from every angle!!!