Ai, sidestep to his right, chop his hand to disarm him, kick him in at the side of his knees, put him in a chokehold to block off his windpipe, pull him back and knee him in the back! Then use you foot to stomp the back of his knee to immobilize him! If you have a hand free, elbow him in the back of the neck until he’s unresponsive! If you didn’t disarm him with your first strike, grab his hand and bring it into his own abdomen! Then proceed with the previous paragraph. Then call the police