The People’s Joker feels as if it comes from the nichiest corners: an autobiographical mixed media art piece, based on the filmmaker’s own trans coming-of-age, that reclaims pop culture as a way to personally convey and connect the past to the present. But as specific as The People’s Joker may sound on paper and as polarizing as it appears on screen, this wickedly transgressive tragicomedy is one of the most accessible films ever contributed to…