Political correctness is taking its toll on Halloween. Any worms should be housed, fed, read their rights, then returned to their native soil, or, if they so choose, given refugee status in yours. Uh uh, cruelty to animals or their depiction is a no-no.
Ghosts are out of date.
Casper is clearly a dead, white male, probably European, and full of hot air to boot. Fairy princess costumes might offend both gays and feminists. Dracula outfits will bring stern warning letters from the Transylvanian consulate. Those neat masks with jaws rotted away, eyes bulging on distended optic stalks and massive, oozing wounds will get you in trouble with lawyers who specialize in representing accident victims on contingency bases. Which is to say, all of them.