Midway through this year’s MTV VMAs came an unexpectedly serious and sincere appearance by Susan Bro, mother of Heather Heyer, the counter-protestor slain in Charlottesville. Introducing Bro was the Rev. Robert Lee IV, who denounced his famous Confederate ancestor and endorsed anti-racism activism. Today, Lee announced he’s leaving his position at Bethany United Church of Christ in Winston-Salem, North Carolina, after facing backlash from…