The greatest lie sold to Americans (as a US citizen) is that we all can be someone. Not only is this not true, but disingenuous to tell lower class people "you can be someone! you have the same opportunities as everyone else!" I'm not saying the opportunity doesn't exist everywhere, but it definitely is glamorized by the media as though it's a very tangible path. It's survivorship bias at the very least.

If you're born of the working class, chances are you will stay there unless you can figure out a way via labor or relationships to get out. More often than not, people don't/can't.