IMHO Selco I think said it all. You can be aware of danger, you can walk confidently etc. You can even be visibly armed. But unless your determination to use your weapon is transmitted completely outward (and just ’cause you carry a weapon doesn’t mean it is) so it can be almost felt? You stand just as much chance of getting attacked if not just to relieve you of your weapon…or even, because they ‘feel’ like it.
When people are on drugs/drunk, scared sh*tless by a SHTF world, desperate, have nothing to lose I’d say all bets are basically off. The level of irrational behavior will be staggering I have no doubt.
‘Being “not worth” attacking is always first “defense”, second would be showing on very clear manner that you are capable of doing harm, and that you have will for that‘