Have you ever had a wrong first impression of someone who had a different background or came from another culture

Have you ever had a wrong first impression of someone who had a different background or came from another culture

Have you ever had a wrong first impression of someone who had a different background or came from another culture? Has someone from a different background or another culture ever had the wrong first impression of you? When? How? Should a culture have predominance over another? If yes, under what circumstances? What are the consequences of cultural imperialism? Be specific.