Boots Riley at the SXSW Film Festival —Hubert VestilIn Boots Riley's new movie, I Love Boosters, hard-up shoplifters wage war against a derivative fashion billionaire who relies on sweatshop labor and drops racist epithets almost as often as she calls herself a visionary. Societal loneliness is cured by way of a pyramid scheme led by a prosthetics-laden Don Cheadle, and a giant ball of eviction notices stalks people through the streets of San Fr…