I spent the last two evenings watching Lifetime’s documentary “Surviving R. Kelly.” If you haven’t seen it, watch it. Watch it now. I was in college at the University of Illinois at Chicago at the time his infamous “pee tape” became famous. I remember people in my classes telling me, through hushed whispers and giggles, that R. Kelly likes to pick up underage girls at the Rock and Roll McDonald’s downtown and then film himself peeing on them. It was…