My neighbor's house is being sold and I want to talk to the prospective buyers.
Hmmmm. Okay, what do you want to talk to them about?
I feel intimidated by them because they are of a different ethnicity
For all you know, these buyers are perfectly normal people. You shouldn't judge someone just based on their ethnicity. I say you should talk to them, but keep an open mind and be neighborly!
I will never be accepting. These new neighbors need to go.
You have an opportunity to be open-minded and learn more about people of different ethnicities as well as the fact that we are more the same than we are different. I'm sure they are fine people and if you want to have a more pleasant life you should assume the best of others, no matter what may be different about them.