He called them pussies, so he had it coming. That's actually a position of some people (Sun readers I assume). In this case they can close the streetcar doors from the exterior AND kill power to the vehicle. No note of a hostage was seen (else they'd have called SWAT who presumably have more brains, I imagine), so really no idea why they didn't try to not escalate the situation by flaunting their testicles.
Of course the Chief says there'll be action, the cop that shot him is all torn up so maybe he'll get a cushy desk job to cope with his PTSD and that'll be it.
Meme-worthy photo of the office out though