Classism and racism are issues yes, but the most powerful institution we have in society to fix these issues is our educational system because classism and racism are learned early. That's why we desegrated schools and colleges. Unfortunately, classism and racism are sometimes gestated in private and boarding schools so those institutions should also be working to solve those issues, which normally doesn't get solved because as private institutions they rely on the donors and it's the donors themselves that have encouraged the classism in the first place.
Programs like Affirmative Action are in place all over the world to fix racism issues once these children become working adults in society. This is why we must protect Affirmative Action. In America it was first introduced by JFK and then the Civil Rights Act but around the year 2000, California, Washington and Michigan have been trying to get rid of Affirmative Action by claiming it creates reverse discrimination and illegal quotas. And they're partially right, that's why Affirmative Action needs to be amended to protect against classism.