Yep. These things happen. And always have. So what?
Do they have to continue? Can we trim it down a bit?
Would you even be wiling to try?

Maybe if everyone there would have been armed...they would have killed those guys.
Maybe that reaction would have been excessive... since in the end no one died.

Or maybe, and in my mind more likely, there would have been absolute mayhem and everyone would start pulling out their weapons and there would be no telling who did what... or how many would be left dead in the end.