[SauronOfMordor]

Somebody’s making the assumption that Mexicans and Puerto Ricans get along with each other, just because white people see them both as “Hispanic”.

https://www.villagevoice.com/2011/09/14/do-mexicans-hate-puerto-ricans/

https://www.nytimes.com/2003/09/06/nyregion/little-but-language-in-common-mexicans-and-puerto-ricans-quarrel-in-east-harlem.html

[Pollard]

Most Ctrl and South Americans hate Mexicans too. They think they’re grubby little stupid people.

[Svartalfiar]

Somebody’s making the assumption that Mexicans and Puerto Ricans get along with each other, just because white people see them both as “Hispanic”.

They are both Hispanic. The term "Hispanic" refers to anyone from countries/areas that were colonized by Spain, Spain itself, or their descendants. Which is the majority of Mexico and south, as well as large parts of the Caribbean. Basically, native Spanish-speakers. So that excludes places like Brasil (Portugal), Guyana (Britain), Suriname (Netherlands), French Guiana (still owned by France today), Belize (Britain), and much of the Caribbean, yet does include many from these US. Technically, everything west of the Mississippi, Florida, and southern Alabama/Miss were all under Spanish control at some point, so many people from those areas who trace their lineage back enough are, technically, Hispanic.

To add to that, "Latino" refers to anyone from Latin America, basically anything south of these US.

To add in even more stuff, people recently started using the term "Chicano", which is specifically Mexicans that live in these US.

For more, the term "Mestizo" is anyone of mixed European and tribal American blood. While most people only think of Mayan/Aztec heritage, it does technically include Chocktaw, Chickasaw, Creek, Seminole, Blackfoot, etc etc etc as well.