Rail staff are wearing them, Wetherspoons staff had them on when I went in, it's becoming more common luckily.
I know it isn't a foolproof solution but I think it would stop so many behavioural incidents.
There are signs up in many public facing workplaces saying abuse won't be tolerated, yet it seems teachers/support staff are expected to put up with it 'because they're just kids'.
I used to be a teacher, was threatened by a pupil, he got half a day in internal exclusion and that was it. I had a year 11 pupil make death threats about another teacher in front of me.
I've had another year 11 male pupil walk up to me and grab the mouse out of my hand when I was on the pc.
However have got off lightly compared to many teachers. Still, we're sworn at constantly and verbally abused.
I have left teaching unfortunately due to the behaviour, my new role is much less stressful.
You practically have to bring a weapon into a school to get permanently excluded, schools don't like to permanently exclude due to costs and reputation.
We used to have a very difficult pupil who brought in a fake weapon one day. The headteacher himself said unfortunately it wasn't a real one, otherwise we could have excluded him permanently.
Anyway, I don't know what the solution is, all this restorative conversation stuff doesn't work. Kids don't care about a detention or even a day's exclusion in a lot of cases.