I'm not saying you're wrong. I'm just saying the mistake is understandable, and that you can correct someone in a polite way. Probably everyone has used termino

I'm not saying you're wrong. I'm just saying the mistake is understandable, and that you can correct someone in a polite way. Probably everyone has used terminology the wrong way, and I don't think overreacting helps your case in any way. (I don't understand your remarks about ethnicity. As far as I know 'douchebag' is not a racial slur.)