Che of the Dead

So I saw Shaun of the Dead last night with a friend and his friend. Funniest British Zombie movie...ever. The second degree friend was wearing a Che Guevara t-shirt. I didn't say anything, but I now wish I had. She was cute, but does she know what Che represents? Maybe it was an ironic-type thing, but I doubt it. My only real excuse is that I didn't really know enough if she started to defend him with facts. Now I know plenty.