Dylan Roof was not taken to Burger King. He was being interrogated, complained of hunger, and the cops bought him a .79 hamburger from Burger King. This was to satisfy humane treatment of a prisoner, and the cops wanted to take no chances of a nitpicking lawyer.
Incidentally, he ate his burger in cuffs.
I'm not calling anybody dumb, but I can't believe people think cops would take a mass serial killer to Burger King.
What did they do; give him a double whopper w/ cheese, large fry, coca cola milkshake, paper crown, and gently pat his shoulder saying it'll be okay? Is that what people really think? Christ.