What is communism, socialism, and fascism?

With the midterms coming up, these words are being uttered more and more each day. So what does it really mean when we call someone a socialist, communist, or fascist? Where did these ideologies come from, and why do we have ideologies in the first place? Today we speak with Patrick McGovern, professor of political science at ⁠ Buffalo State University ⁠ , and Susan Kang, professor of political…