Grab the cop's sidearm and let things go from there
From Create Your Own Story
You deliver a surprise attack to the groin as soon the cop's eyes turn elsewhere. You kick him sharply in the nuts and he buckles to the ground. Just as he falls on his knees, you grab his pistol from his belt. It's a 9mm Beretta Somethingorother handgun, and now it's yours.
From somewhere close, a woman screams, followed by another, and before you know it, there's a whole crowd of people screaming and shouting at the maniac who's holding a gun.
You have a gun, and they are all so squishy and defenseless. You...
