In his Netflix series “Colin in Black & White,” former NFL player/kneeler Colin Kaepernick compared the treatment of players at the NFL combine to slavery. “Coaches will tell you they’re looking for warriors, killers, beasts,” he said. “They say they want you to be an animal out there. And you wanna give them that. … What they don’t want you to understand, is what’s being established is a power dynamic.” As scenes from a slavery auction play out he continues, “Before they put you on the field, teams poke, prod and examine you, searching for any defect that might affect...