If you wear a Che Guevara T-Shirt

Unless it is one like the one on the left, then you are wearing the image of one of the 20th century's worst psychopaths, who (like Hitler) never hid his hate and goals in his writing and speeches, which if you took the time to read, you'd find jewels like this (on the subject of the Cuban missile crisis:

"If the missiles had remained we would have used them against the very heart of the United States, including New York. We must never establish peaceful coexistence. We must walk the path of victory even if it costs millions of atomic victims."

             -- Che Guevara, Interview in London Daily Worker, 1962