Based on the quote in the DU post, it sounds like some K9 unit (military? civilian?) or training school put on a military or police dog training demonstration, and one of the dog's quarries happened to be wearing a Kaepernick jersey. Big whoop! Dogs don't go after their quarry based on the quarry's clothes, they follow their handler's commands. The K9 unit or school probably buys expendable clothing for training and demos at Goodwill or Salvation Army, not at a full-price sports fan store.