Predators are less likely to attack someone who can defend themselves, it's quite simple.
Yes, for the US with their unique historical and cultural differences, but it doesn't make it an international metric.
Everyone in the US agrees with the inequalities and segregation and find it acceptable that an individual has to become a predator to survive because they don't find it acceptable to help each other on a governmental scale.
Some countries have worse inequalities than the US but they don't think they need guns to have freedom in their daily lives.
The empirical evidence from the US does not bear that out. Compare murder rates between the US and any peer country with more gun control.