Base society on strong foundational principles like liberty and justice. Give everyone the tools to properly evaluate ideas. Attempts to extinguish bad ideas

Base society on strong foundational principles like liberty and justice. Give everyone the tools to properly evaluate ideas. Attempts to extinguish bad ideas should focus on arguing the point. Gradually the bad ideas will die out. Every possible alternative relies on whoever is in power exercising condescending 'parent knows best' authority. And the rest of us just have to hope the whims of whoever is in power happen to align with ours. That's a bad way to run anything from the get-go, doubly so when the next generation takes over and is expected to know what the hell they're doing.