Wow, did you do this research yourself, or is it somebody else's study? Cite that study in your paper.
If you are having trouble, remember to write one thing at a time. Start with anything. You can move the paragraphs around later.
I don't know what his essay is for, but it is probably just as good to write about the LACK of diversity in your community. Read some articles about the ethnicities represented in your town/city, and write your thoughts. Write about your experiences in the community.