Just as a slogan, "Reform" is too boring and vague. "Police the police" is catchy but sounds more about oversight, which is not really the idea here. I thought of "Reduce the police", which might get broader support than "defund", but isn't as catchy and maybe still wouldn't get majority support. Polls show the police are still popular, though obviously and justifiably less popular lately. I suspect these calls for defunding (and abolition) are going to scare public opinion back in the other direction, which is a pity, since there really is a reform position to stake out here. For example, I bet even most police offers don't want to be the ones to have to deal with mental illness, addiction, and homelessness. A moderate and non-scary reform movement would surely get massive public support at this time, while a radical one is likely to provoke a counterreaction. It probably always works that way though, and eventually something comes out of it anyhow.

How about “Calm the Police” or “Calm 9-1-1”

Not energetic enough. How about "Replace the police"?

Maybe let BLM pick and setup their own police inspectors and have some oversight over an agency that polices the police. Instead of D.A. handling cop cases it would be members of this agency (they'd have lawyers who handle prosecutions - their own D.A.). Could be on a national or state by state level.

How would de-militarizing the police affect the overwhelming racism problem that exists in police departments nationwide?