I know some racial stereotypes of Hispanic/Latinx/Mexican-Americans. They are viewed as brown or indigenous despite European Spanish ancestry with some Moorish-Arab genes mixed in, unable to speak English or have a heavy accent, humongous close-knit families under a strong "machismo" male head of household, and highly religious Roman Catholic, note America has a history of anti-Catholicism by some Protestants who thought the Vatican "isn't Christian".
On pop culture like TV shows and movies for a long time, Mexicans are portrayed to be "illegal aliens" demographically taking over the Southwest US, in third world poverty, in farm labor jobs and in "cholo" gangs involved in drug trafficking and high crime activity. Anti-Mexican sentiment is part of Trump's political agenda to win the presidential election and he used defamatory statements like "they are rapists and criminals, but some of them are good people".
And historically, Mexican-Americans lived apart in high degrees of segregation (barrios or colonias) whether legal (1940s CA and 1960s TX) or by custom, since the US has a long history of Black/African-American and ethnic-immigrant neighborhoods and towns of their own (i.e. Chinatowns), but there is an increase of Mexican majorities in southern CA in the late 20th century and now in 2020, over 40% of CA's population is Latino compared to 10% in 1960.