yeah... unless you've got a riot-control fire-extinguisher full of pepper-spray, or a machine gun, best to keep walking when a group of hoodies is using an axe (or any other medieval weapon) to steal your bike.

even on the internet, most people wouldn't be too macho if they turned a corner and found that. just keep walking and call the police. don't even mention the bike... just a group of guys swinging an axe on a corner in brooklyn. any cop with more than a week of experience would approach the scene with lights and sirens, hoping that they'll leave before he gets close enough to even see them.