1) It has to do with the school performance. That’s what happened in ERCSD. Years ago the public school population was 80% white, now it’s more than 90% minority from low socio economic classes. Many ESL. the management of the schools are much more difficult because of the additional services neccesary and performance will be lower, resulting in more unhappy people.
2) Like it or not, the rabble rousers are different and are less willing to work with the system to make it work rather than trying to just disrupt the system entirely.
Both items are borne out by the facts on the ground.