Possibly somewhat off-topic because it concerns a scenario without possession of a firearm, but we all have to deal with "gun-free" criminal protection zones, so I think it's fair game for discussion...
Apparently in Columbus, Ohio around OSU's campus there has been a wave of armed robberies. I have a female relative who attends school there and lives off-campus nearby, and she told me that all of the victims had been men thus far, until this:
Woman Says Men Attempted To Rob Her At Gunpoint | WBNS-10TV
Someone she knows was mugged - one man approached with a gun, and another hit him on the back of the head with a gun. They took all of his things and fled. You can get a good idea of how the robbery of the woman took place in the above article. My relative said that she heard that all of this is because of gang initiations. She has also received numerous "crime alerts" from the police via the university alert system, but it seems that they are taking a wait-it-out approach and not doing much of anything proactive.
Since most of the students walking around the neighborhood are either going to or coming from campus, none of them are going to be (legally) armed.
She is quite upset because the advice she's getting on what to do is all very contradictory. She keeps a firearm in her apartment and is a great shot, but that doesn't help her walking to or from class.
So, if two armed men order you into an alley in a crowded college neighborhood, what's the next step?