In all fairness the girls and yes they were Amish girls too, were beating what ever that person is in the school yard. Okay in this country we did once have laws about how we treat the mentally ill. Beating them in at school would have been forbidden just as beating them in a nervous hospital.
I think the girls lose on the gender hierarchy according to the State Church of PC, but they win on the race hierarchy. So basically, a tie. The deviant loses because he took matters into his own hands rather than curling up into the fetal position until the authorities arrived.