Is it the victims fault that they were shot by the gangs because the gang members were too poor and repressed to make good decisions? Or is it the fault of the people actually committing the crimes?
Our civilization is facing a severe inference/causality deficit, it would seem, in favor of self-destructive empathy, c.f. Nietzche's Master/Slave Morals Duality.
The cartels will source from other places if not from the US. China has a very heavy hand in drug manufacturing and would surely want to protect their product should all arms be removed.