I made sure that all of my kids understood socialism from all perspectives, both in theory and in practice. I also encouraged them to fact check what I told them and to fact check whatever they heard elsewhere. If “this time is going to be different”, they know to ask what will make it different. My kids turned out more conservative than I am.
These days fact checking means going to Snopes to see what theyve determined, not actually looking into it for yourself. Thats too much work for most students, hey, and even most adults.