Karens gonna Karen. Your last sentence reminds me of that. Not sure of the political value for a local progressive official to attack racism in law enforcement. Historically it's the Feds who come in and try to change it up with prosecutions. Sadly and as you hint, we don't see it as an effective campaign strategy with a guy like Mayor Pete (although it was forced upon him) and this seemingly cool MPLS mayor. Might scare off Karen (and I mean even "liberal" Karen like that Central Park wack job) that her mayoral candidate is campaigning to undermine her safety that the police provide against the big black monsters.
With regard to bringing in the feds, aren't we sort of past the FBI breaking up the KKK stage and now in the "winning hearts and minds" part of this?
Also I just don't think there is politician alive who can promise they are going to solve racism. They could however promise that when racist incident happen (under their watch) they can be trusted to apply the law fairly. At the end of the day this is really (in my mind) what the government has to offer... a fair application of the law. I.e. justice