This turd should be thrown in.
It sounds like his caregivers were goofing off and not watching him. The police should investigate that. Not saying it’s the case with these two but a lot of these caregivers are nothing more than MacDonalds workers.
A lot of “mentally disabled” or as we said in the old days mentally retarded people can be violent at times. That is why they need to be watched when out in public. Their low IQ causes very low impulse control.
Some of them probably should not be out in public and put in an institution like in the old days. More so if the caregivers are not that intelligent or really care about their job.