To complete the story, add who am I, what I have done to them, and why they are firing to me.
Because I won't identify with just any SWAT team receiving this and then answer from their standpoint.
Given the regime and how it treats it's people, one could easily reverse the question.
So, before answering the "should police have guns and shot at people" -- I'd first ask: wait, how did it got to a shooting match between them? What's wrong in this society that exhibits this?
For example (and Godwin's law be damned) if the unit send to stop the Warsaw Ghetto uprising was shot at, I could not care less about it. If they wanted that, then they should not have done what they have done (and served those who they have served) in the first place.