The main difference between fascism and socialism is their structure. Fascism is vertical hierarchy, or top-down. Socialism is horizontal and on the same plane with no hierarchy.
Try to explain this concept to conservatives, and their eyes glaze over and roll into their heads.
It's simple really. Fascism believes that the people at the top are better than the people at the bottom: White Christians are better than jews, gays, or bown skinned minorities.
Socialism is that everyone is equal and deserve/get the same as everyone else.
