Or, you could simply make an end-run around. that, by just avoiding places of the sort where 24 people have a higher than average likelihood of being shot at..
Granted, you cant anticipate every situation,location, etc. BUT- common-sense, and street-sense equips even the most dim amongst us with the basic idea that some places are potentially hostile and dangerous.
Ya, sure most of the "hip" or trendy folks of the locale may find it fun to frequent the place, but if it draws the sort of elements that are going to end up shooting at each other...what's worth more- the potential fun of a few minutes getting a buzz in a place playing crappy music, or you going home at the end of the night?
If you want to carry a firearm for the objective of going well-equipped into hostile environs intentionally, join the Army.They've no shortage of need for Infantry in a few places around the world.