This is something you see often nowadays, especially on social media. Activists get some controversial policy approved, or censor some already-existing content. Yet if you protest it, you get the "dude why do you care" fence-sitters. They'll tell you that it doesn't matter that much and that both sides are silly anyway. Often these people are in complete support of said policy/censorship, but if you point it out they'll just tell you that those extremists don't represent them (because they're the enlightened "centrists", of course), and you get nowhere.
I feel like this is a big problem. How do you deal with this?
Indeed. They don’t want to be saved. Let nature take its course and cull the parasites. Why are you arguing with parasites in the first place? Get away from the cities. Take care of your own. You should be growing food, learning to treat grey water and sewage, learning to collect and purify fresh water, creating power with small hydro, wind, solar setups. Learn small engine repair. Learn to weld.
The communists will starve themselves. You just need to step back and watch it all happen. There is no country or battle to win back. They won. They rule.