“Any concept of one person being superior to another can lead to racism.” -Walter Lang
Many Christian Jews during Biblical time viewed themselves as racially superior to Gentiles (consisting of largely Greeks). A small but nonetheless important facet of this belief was that their foods were right, and the Gentiles’ foods were wrong. To reconcile the races, God decreed that Christian Jews would eat with Gentiles. Yet, sometimes Peter (a Jew) would eat with the Gentiles, but other times when Jews were present he’d refrain due to political pressure. To this day the idea of racial superiority hasn’t gone away and I assure you God cringes at any hint of prejudice, intolerance or racism. If you see this go on then do what Paul did; Galatians chapter 2 says that Paul corrected Peter publicly. Paul understood that Peter could not behave this way and represent Christ. If you’ve wrestled with racial superiority then I encourage you to repent and ask God to help you change. If you know of people who are this way then speak up and tell them racial superiority isn’t OK.
For there is no distinction between Jew and Greek; for the same Lord is Lord of all, bestowing his riches on all who call on him (Romans 10:12, ESV).