A rebel flag means different things to different people, to some it means you are a white supremacist to others it means you are a hard core southern rebel, most southern rebels are not white supremacist, if you put that flag in the back window of your truck and park in the projects don't be surprised when some bigot throws a brick through your back window. 
Why can't we all just be who we are and stay in our lanes, life is much simpler that way.