Cultural diversity

I am married to an African of Indian origin, brought up bilingual French/ English, influenced by European culture, who feels at home in South East Asia. This is what I call living in a multi-cultural environment. Even though the world is a melting pot of different cultures, genes and nationalities, the truth is we never think much about it. A time will come when it will become rare to find anyone of purely one ethnicity. I grew up atheist in a conservative sexist society and learned how to deal with it. I am now experiencing xenophobic, racist, prejudiced and ignorant behaviours and I wonder how long it will take me to learn how to react to it without feeling angry, frustrated and even disgusted.