Hi, this is a well known phenomenon in politics that is much discussed in political science and sociology, and goes by many names (strategic polarization, racial capitalism, split labor market theory, etc, and depending upon how you frame it, it encompasses all politics going back to Plato’s Republic). There are many examples where elites have stoked division amongst the poor (usually along ethnic or religious differences, but any difference can be utilized).

The most famous examples in America were the divisions created between poor white and poor black Americans during Reconstruction and the Jim Crow era to prevent them from forming class solidarity, and then later, the Southern strategy that enabled Nixon and the Republican Party to regain power during and after the Civil Rights era.

If you are unfamiliar with this topic, you can look at wiki articles and blogs like these, and then go deeper by reading academic papers and books on the subject.

https://en.wikipedia.org/wiki/Split_labor_market_theory https://en.wikipedia.org/wiki/Black_Reconstruction_in_Americ... https://en.wikipedia.org/wiki/Southern_strategy https://belonging.berkeley.edu/new-southern-strategy