> your impact as an individual is limited
People such as Solzhenitsyn prove that your impact as an individual can be staggeringly large. Individuals can shift the course of nations and effect the lives of hundreds of millions.
> ignores the reality that you have no weapons with which to fight
Again, Solzhenitsyn proves that you have the written word and it can be an extremely effective weapon.
> there's not much you can feasibly do other than watch it
You should really read a bit about this Solzhenitsyn fella for some counter examples. But of course very few individuals are willing to bear the burden it entails.