"To have somebody that didn't know anything about my culture telling what Latino was . . . How do we speak again? . . . How should I dress?"
"You're not one or the other. You're both, and you should be proud of both, and not be embarrassed or ashamed of it. There is nothing to be ashamed of."
I know where the Dominican Republic is! How do people not know that? It's on the other side of Haiti. Next you'll be telling me there are U.S. citizens who have never heard of St. Thomas. A likely story.