Ex-Friend:: I don't like Mexicans.  Oh, but not you. you're different. Me:: So you like me, just not my whole family? In a car with a mutual friend who stayed silent. This made me feel disrespected and alone.
The comment about not liking Mexicans does not sound right to me. Are you speaking for yourself?
It's just from my experience and I'm speaking for me.
Stating that you dislike Mexicans shows a lack of understanding about the Mexican people and their culture. I believe it would be great for you to learn about Mexican culture from travel vlogs on YouTube. This is a great way to be more openminded about different groups of people.