Applying physical force to counter in the moment someone that tries to rob you is not vigilante justice. That would be more like if you had your phone robbed, and a few days later you went with your buddies to beat him up and get your phone back.

The former is just maintenance of basic civic standards.

> So, because there is a failure of policing in your locale, we should simply resort to vigilante justice?

Yes; under those conditions vigilante justice is a reasonable way to 1) protect society from criminals, and 2) encourage the state to correct its failures of policing.

It'd be silly to blame the police, this kind of crime can only be addressed at a much higher level.

I'm not even too inclined to blame government, as I consider this minor loss of security a perfectly acceptable tradeoff in return for their economically beneficial pro-immigration policies.

This is just what living in a big city is like, unless you're in a police state.