Hmmmm.....Firstly, I must admit I had a drink inside me yesterday & some of my "labels" were made purely with the intent of winding up armybike....
Allow me to clarify.
I would not label folks with mental health issues, be they depression, dementia, bi-polar or anxiety disorders etc. in such a manner.....
However, if someone flips, goes over the edge, breaksdown to such a degree, they arm themselves to the teeth, take to streets & start slaughtering innocent people.....I'm quite comfortable labelling THOSE people as loony-tune cunts, murderous nutters etc.
Also, I think you may want to reconsider the parallel you've drawn between pissed-up twats lobbing bottles at police with isis terrorists......its perhaps a little foolish....