Some people look for reasons to be outraged.
Something to do with NAZI's, gay rights, or slavery is the simplified lazy-mans method of being outraged. As long as everyone is shallow, nobody will notice how simplistic and shallow your outrage is. So in essence the simplistic shallow people pat themselves on the back for being so simplistic and shallow.
Don't see it yet? Go look at just about anyones facebook feed. A bunch of people patting themselves on the back for gay marriage in the U.S. even though 5-nines percent of them did exactly zero to support any gay rights.