” He merely has to enter a house and tie up the occupants until the police leave.”
YOU are responsible for your own safety. You wrongly, again, assume someone else is responsible for your safety. It is not the government’s job to protect you from bad guys. They cannot possibly be everywhere at all times to protect you. That is childish to believe, “Daddy, Daddy, Fix it!”
I can guarantee you if that bad guy had been in many other places he wouldn’t have survived the hour. In Boston? Hells Bells, bad guys can get everyone to cower and stay inside and not look for them!
I asked what could have been done differently and the posters offered their opinions. I am satisfied with the responses. I am moving on.