None of what you posted here supports the original claim made that "the overwhelmingly majority of people who want radical change are white and aren't black"; these polls all contradict that.
One example, from the first Gallup poll:
> Which of the following best describes your view about changes that may or may not need to be made to policing in the United States?
> Major changes needed:
> Black Americans: 88%
> White Americans: 51%
We can quibble about the definition of "radical" vs "major" but it seems pretty clear based on most polling that Black americans are far more dissatisfied as a demographic group with policing, than white americans, and are far more open to a variety of reforms ranging from minor to "radical".
As you said, there's no contradiction between wanting to reallocate money from police, who may be seen as doing a poor job, to social services, and wanting the police to actually show up and do the job they're supposed to be doing.
