Are you willing to involve yourself in a situation like this? No one in this video is armed with a firearm, it would seem. If the bad guy had been faced with a bystander armed with a gun, this would have likely ended a lot quicker and with the bad guy in police custody.
But if you’re up against a bad guy who has a knife, every movement is critical. Watch the above video and think about how you would have handled the situation if this were you.