I've found that many people want to share their cuisine with people from outside their culture as a way to connect and to in a small way help those people better understand their identity.
Someone who opens a restaurant that expressly represents Ethiopian food is making an overet invitation for people to come and experience that cuisine.
It also goes a little way to helping someone like myself understand distinctions in Africa between people from different geographic areas or cultures.
I certainly will not be going to Mahider Ethiopian to gawk at the employees, or mock their culture or to demean them. I will be going so that I can experience a type of cuisine that I haven't had before and support directly a locally owned African American business.