[yefragetuwrabrumuy]

Oddly enough, I disagree with most here about using a gun in such a situation. Having two long knives would be much, much more effective.

Holding the handles in such a way that the blades are concealed behind your forearms, a single person could pass through a moving mob quickly, leaving substantial and life-threatening gashes on many of those he passed by. Likewise, they could be used to effectively block any attacks while still seriously injuring the attackers.

Knives do not run out of bullets, no do they give off a loud report that serves as warning to others. Knife wounds are very serious, and are much more difficult to treat even with prompt medical care, resulting in a significantly higher mortality than do gunshots.

And knives generally do not harm innocent bystanders or those not targeted by the knife user.

[GenXteacher]

Not a bad thought- except that if you are close enough to smite the enemy with melee weapons, you are also close enough to be pulled down and destroyed by them. Firearms allow you to keep the enemy further away, which in this case enables escape, which if a horde comes upon you in a public place, is the better course of action. Besides, if you intend to cut through a mob with cold steel, you would be better off using one of these: