Because people would think you come off as a racist.
Now... why would you call your fellow Christian a scumbag?
What a way to live. To not say what you want to say because you are afraid of being FALSELY accused of being a racist. The very thought of living that was is absurd to me. I say what I want to say and what I believe with no thought whatsoever of what someone else may think of it or any false accusations. Thats on THEM.....not me.