I m not comparing, I just stated I know when intent matters and if you are African American, you should understand this is nothing compared to real racism issue. The event leading up to the sigh showed elitist attitude from op. If some Americans go out of their shell and experience other culture, they would understand what real humility and gratitude is. I have seen much worse reaction from employee who are being looked down upon by a customer who thinks they are better than them.The days of slavery is long gone. Did op wanted the employee to say “yessa massa I gon be a gud n*** for you and get that bread how ya like it sir.” The employee is already being submissive to op demands and you can’t expect someone to not sigh after redoing a work. That is natural human reaction. The employee listen and did everything the customer asked. “Everything.” But just because of a sigh, op walked out. If that is not being a douche than society has lost the meaning of being empathetic.