Interracial Relationships! I need advice!!

Ma
I have been engaged for about 8 months and am getting married at the end of November! Maybe I just lived in my blissful ignorant world for too long, but did not realize how prominent racism actually still is. How do I tactfully deal with the racism without exploding and yelling at everyone! I am not one to sit and take it but don't know how to respectfully inform them they are bigots!