You also don't affect lasting, meaningful change with dreams of an "uprising" or other fanciful ideas spawned by stories of Cuba in the 50's. There will be no romantic struggle here, no plucky rebels, no heartwarming finale where everyone is happy.
If you want to make the world better, work on it from within the system and learn why the system is the way it is and what power you have as an individual and as a group, THIS is how people have changed the world before.
I would delight in socialism becoming more widespread and accepted as a system to maintain population growth and happiness, I argue for it all the time, we need a number of very important safety nets before we start feeling like our tax money is going into something less abstract than "America: fuck yeah!" But I also know it takes more than cosplay theatrics and defending tyrants.