Who benefits from the political, and racial division of the American people?

The Republican Party.  They rely on boogeymen, such as illegals, Muslims, and liberals, to scare their base and keep them voting for Republicans.

The wrong side. 

nobody......it's sickening.

Malcolm X speaks on the racism of liberals
https://www.youtube.com/watch?v=grsZc4quQqU

Malcolm X on White Liberals
https://www.youtube.com/watch?v=9hm8wXZmRD8

Booker T Washington (1856-1915) said it in this way:

Democrats obviously so they can keep the identity politics gravy train going.

Certain selfish politicians, generally those from the deep South red states. 

Follow the money.  It flows through the DNC.