I agree with what you’re saying but not the reason. The actions of the police don’t grant Afroman any additional rights. He had the right (at least to the music video) regardless of whether the police were right or wrong.

I believe the reason he has a right to publish this work is because he is not profiting from their likeness. He is profiting from his work of criticism. (Edit: a sibling comment points out that Ohio exempts audiovisual and political works)

Also, as a public servant in official duty, in a place where they found themselves likely to be recorded, they had no reasonable expectation of privacy.