Do you have a job? Does it require you to do things you don’t want to do? Would you rather sit on your ass than stand outside of a car dealership all day? For most including the police the answer to all of these is “yes”.
Their choice is to continue their career as a police officer. Obviously they will need to take some job to support themselves or a family, but there are so many options which don't require them to be a defense force of a harmful system, enforcing broken laws and harassing those who protest against it.
The point is choosing to be a cop is the problem. Theoretically cops protect the population from criminals, but in reality they protect the interests of billionaires who routinely harm as they will to make money.
The best reading here is they're coerced by money to be a cop, but that's just a greater condemnation on everything the US stands for.
"And here we see Dora the Explorer on an acid trip. Notice how she's completely incapable of resisting licking her monkey, Boots. Even Swiper feels sorry for poor, wet, Boots."