But normally they do risk any other people? No, not at all. People are miles from where the robot could potentially go even after it is remotely aborted/blown up.
It's not just the area where the first stage might touch down, it's how far large pieces of debris might be thrown in a worst case RUD.
Plus, the Secret Service may be feeling far less tolerant of "eh, it's less than a 1 in BigNum chance of anyone getting hurt" odds than your average Tom, Dick, or Harry.
