Its about the set of social skills you pocess.
I am actually a Latin American educated Westerner.
So I have the social skills and experience to interact with and know about Latinos.
I know the cultural values, icons, social expectations etc.
Here are some things I know about.... that maybe not many Westerners do:

frijoles
cochinita pibil
Virgin de Guadalupe
Cantinflas
Charros
Granizado de Tuna
El grito de independencia
Chac Mool
Dia de Muertos
Cenotes

It is part of my life experience.