You got off work late. It's dark outside. You always walk home but know of a shortcut down a little used dark alley. So to save time, you take the shortcut. You've walked the 70 yards and are about to come out on to the well lit sidewalk, just a minute from your home. A couple of shadowy men step out to block your exit. You, in a loud voice, say "hello fellas, how's it going?", and keep walking confidently toward them and to the lit area. One guy raises his hands in a boxing, on guard position. There are 3 or 4 other people standing by the light pole and are watching what's going down. Do you sucker punch the guy who went into a fighting stance? (you're close enough by the way, for a quick centerline punch, and know you could do this) Is this legal? Just because the guy posed a fighting stance, is it legal and/or right to just take him out right there? Should you worry about the bystanders saying, all they saw was you taking the first swing or punch? Should you not even worry about what's legal at this point or bystanders and act fast anyway?