Certainly a good way to cause a shift in attention away from the Yellow vests, so yeah, probably an 'allowed' attack. "Hey we have intel on this guy that suggests a very real and immediate threat" "Okay, well, let's just leave him alone and see what he does" "He just shot a bunch of people, killed two, he's on the run. We could have got him!" "Oh well, we all make mistakes. Oopsie!"