What terrorizes the city of New York in Q (1982)

He blames the campers on starting the house fire which killed his family 

An angry mob of parents trapped him inside a cabin and lit it on fire 

A prank by the campers gone wrong caused him to light on fire

A firework lit by one of the counselors blasts off in his face

Why does Cropsy, Camp Blackfoot’s caretaker, seek revenge on the campers in The Burning (1981)