A lot more than racism is at play here. Simply pointing at one group and saying “racist” does little to move a solution forward.
As discussed upthread, when a “solution” is forced top-down on a community, that community tends to react sourly. This social effect transcends bussing, education, and even racism. One sees this even with health vaccines!
Bussing can work. It was a piece of my town’s somewhat successful school integration. But the way bussing was done in many communities most certainly “burned the house down.”