All you can do is plant seeds in their mind about some of the more realistic & plausible ways to effect change, such as who they can vote for that will work towards easing their lives. They're probably already too overwhelmed to spend much time figuring out how to make things better, so do the thinking for them and gently drop clues they can remember in those rare moments when they're ready for it.

They have to be ready to hear it, or they'll just blow it off. The alternatives need to be fed to them repeatedly & subtly just like all the other propaganda & advertisements in their life so it can already be in their head when they are ready to think about it. It's like fighting fire with fire.