Damn, Erika must be hanging around the wrong spaces. Don’t get me wrong, the liberalist ones are full of idealistic drivel like that, it’s true, but any Marxist space will drill into you their famous quote:

https://en.wikipedia.org/wiki/Theses_on_Feuerbach

The document is best remembered for its epigrammatic 11th and final thesis, “Philosophers so far have only interpreted the world, in various ways; the point, however, is to change it”, which is engraved on Marx’s tomb.