A genocide of latinos in America is never going to happen. Especially as both political parties find the latino population to be useful.
For Democrats, they pander mostly to latinos that have recently immigrated (often illegally) and wants to take advantage of America's welfare programs. For Republicans, they pander to the latinos that have established in the United States long enough that still hold on to their third-world hypermasculine family values (Christianity, families values, that sort of thing).
Let's say for the sake of argument that America becomes more brown; what you're going to get is a Hamtrack, Michigan scenario where the immigrant population that the Democrats originally imported are going to vote for a conservative government anyway. We've seen this with Hamtrack where that city became predominantly Muslim but to the surprise of the retarded Progressives, the Muslim city coulcilers decided to no longer allow LGBT pride flags on public property anymore. We've also seen this with Trump where there was a surge of latino men that voted for Donald Trump in 2024; because latino men prefer a Caudilo (which translates as 'Supreme Leader' or 'Strongman' in Spanish) to run a country.
I've said it before and I'll say it again. If America becomes brown and more hisapnzied then they're just going to eventually vote for a government that puts on an emphasis on 'El Generalismo' to run a country (currently what you see in countries like Argentina and El Salvador) where you'll eventually get a country that is brown but much more harsh on crime while also embracing free market economics anyway.
The irony is that the Democrats and Progressives wanting more brown immigrants from latin amereican countries, they don't seem to realize they're essentially signing their own death warrants by importing the metaphorical 'Pinochet's Helicopter Rides and Rentals' into the United States where Pinochet's Helicopter Ride will someday make it to the ballot boxes where the same immigrant populations they imported will vote for politicians that will reverse many progressive policies anyway.