Racism is not when someone points out differences between groups. In fact, differences between groups should be celebrated not treated like an insult. It's not racism when someone from a different group does, says, wears, or otherwise "appropriates" something from another group. If the person doing, saying, wearing, or what have you was racist they would think that the "others" group was inferior and NOT "appropriate" their culture. I guarantee you no Nazi was "appropriating" Jewish culture.