Sympathy In John Steinbeck's Of Mice And Men

Sympathy is something i feel for people who get treated terrible becuase of their skin color.To this day racism is a thing and we see it everyday black kids getting shot by white police officers because they look suspicious walking down the street with a hoodie on.No real reason for this. Of mice and men portrays how a black man living on a farm full of white guys is treated.But thats not the main point its about Lennie and George, two guys who travel together get into a huge mess and their is no way out of it unless someone dies.
Thesis:

I feel sympathy for Crooks because he is in a lot of pain “Got a crooked back where a horse kicked him.The boss gives him hell when he is mad”(pg 20). Crooks was kicked by a horse and it made his back