Who are vice crusaders?

Question

I came across this term and wanted to get a response to it.

Answer 1

"The normal vice crusader, in brief, is a fellow with an unhealthy interest in forbidden things — an interest which at its mildest, makes him nothing worse than a somewhat ridiculous snooper and slummer, but which, at its worst, presents a picture belonging frankly to psychopathology.

This pornographic obsession, of course, is not the monopoly of actual vice crusaders. One finds it, too, in elderly gentlemen of a more mellow and expansive type — and one finds the gentlemen themselves at all the new leg shows, and eyeing the passing fair from club windows, and prowling experimentally through the big stores. To make and authentic vice crusader, a strong flavor of Puritanism must be added — and Puritanism, unluckily, is a commodity which these states never go short of. Given the combination and the show is ready. He who has it in his bosom will find his naughty girls infallibly, and having found them he will pursue them with a deafening din of shawns and psalteries, and so force rectitude upon a reluctant and cynical world." from an article by H.L. Menken