The video linked here shows an aide hitting a 6 year old autistic child in the face. The school's excuse - the child spit on the aide. There's plenty to be said about the lack of training of aides, lack of standards, the rise of video surveillance in school and the potential problems (video can be used against disabled children). I just want to emphasize this one point:
The use of force and other forms of coercion can never, will never, force a child out of a meltdown. You cannot scare or hit a child neurotypical.
But authority figures keep trying. That's the Cult of Compliance.