Going back to morality, my position is good and evil do not exist outside the mind. And even then it only exists for us as a side-effect of adaptations in our species such as to nurture offspring, form cohesive bands, rally group members to dispose of troublesome oppressors, etc. giving rise to feelings about what is right or wrong. In most members of our species these impulses appear to provide the framework upon which theories of ethics are constructed as tools for making sense of our subjective moral impulses. Some folks, like sociopaths, do not function in quite the same way and as a result operate within a different set of restraints on desires to advance their own, best perceived interests.
My god, not only are you a relativist but you're a
non-cognitivist too! But let's cut the metaethics here...
The normative question remains: does the fact that most societies today and in the past have condemned political violence/robberies not sway you in any way? Or are you just too lazy to refine your condition for admissible political violence?