There are at least 26 defined ethnic groups in Mexico alone, to say nothing of those across Central and South America and the Caribbean.
‘Racism’ is always a non-starter but never more so than when the supposed targets of it aren’t even a single race or ethnicity.
Cultural friction? Of course. This is an English-speaking, Judeo-Christian nation founded and advanced mostly by those of European descent.
I don’t see the Latinos lifting a finger to fit in. Quite the opposite.
You know what promotes understanding, trust, and community cohesion? Yes, having groups of people living in proximity who cannot communicate with each other