“Gee, every cop is trained to recognize a colostomy bag, yep they should have known. A bulge in the pants could be a colostomy bag, a gun or an erection. They should wait and see and risk their live while waiting.”
They should have just left him the hell alone.
And if it had been a gun? What then? You would be speaking out the other side of your mouth and condemning the police for not acting.