The real underlying issue is that companies hire obviously-mentally-disturbed individuals in customer-facing jobs.
It needs to be driven home that hiring such is a bad idea, no matter how short handed you think you are.
And to accomplish that, it needs to be very visible to senior management that hiring disturbed people is unacceptable.
It might have been a good thing for their groceries being destroyed. Who knows what that freak might have done to the food.
oh yeah. There’s no way I’d hire anything that looked like that.