Why is Obama Houston HQ have a Marxist Che Guevara Flag, if Obama defenders says he's not a Socialist?

This is a preview of the CHANGE that Osama Obama keeps preaching. America needs to wake up and understand who they are voting for. Try to use your brain and think for yourself. Stop being a bunch of sheep and allowing yourself to be brainwashed at a rah rah convention. This is the reason Obama has won all the caucuses. They involve mindless sheep and brainwashing techniques. Who thought up such a stupid process?