Politically speaking, most oppressed minority groups in America vote Democratic against white, right wing, Christian, racist, homophobe Republicans.
These groups are blacks, Hispanics, Asians, Jews, and LGBTQ.
But, beyond the fact that they vote for the same party does not dismiss the tribalism that is strong among them.
There are a lot of blacks that don't like Mexicans and vice versa.
Someday, when the Anglo white population dwindles down to a bare minority (even though they will still have the economic power), then that is when you are really going to see the tensions between rise between non-Hispanic blacks and Hispanics.
Personally, in their heart of hearts, I think Hispanics really would like to be considered white and technically they are (despite the fact that most Latino nationalities are mestizos).
Maybe not white in the same sense as an Irishman, German, Englishman, or Norwegian; but, more like a southern Italian, southern Spaniard, or an Arab since most of them share a similar brown complexion.
My Grandad always said that when a Mexican gets a nickel, he thinks he is white. This is actually a colonial Latin American concept. During the that era, it was not uncommon for some well-to-do Spaniards to provide their mestizo and mulatto offspring education, land, money, and status. Thus, they frequently classified them as white. This also explains the reason why Dominicans and Haitians don't get along. Dominican mulattoes think they are white compared to full black Haitians.
There are also tensions between Asians and blacks, particularly with Koreans. In LA, back in 1992, a 15 old black girl was shot in the head by a Korean shop owner. This incident took a back seat to the Rodney King police beating. I hear that Koreans are some of the most racist Asians. At the time of the riots, Korean shop owners were targeted.
At one time, there used to be a strong alliance between African Americans and Jews. Jews were some of the biggest supporters of the civil rights movement. But, when Jesse Jackson and Louis Farrakhan made anti-Semitic back in the '80s, relations between blacks and Jews have suffered since. In all fairness, Jesse Jackson apologized for the offensive remarks he made. In more recent times, Rep. Ilhan Omar from Minnesota has made anti-Semitic remarks regarding Israel.
And none of the groups that were mentioned above like gays. There are many black Christians, Hispanic Catholics, Muslims, and Orthodox Jews that are just as opposed to homosexuality as white Protestant Evangelicals.
So, just because different groups of people vote Democrat does not mean that they like each other.
Right now, they are too busy fighting white supremacy, anti-Semitism, xenophobia, and homophobia.
But, after 2045, when the minorities will collectively become the majority, these rifts will come to the surface.