I’ve always thought they are, but for a different reason than I’ve seen described in the recent discussions. It’s because the police are sexist in how they act out their racism; although both women and men of color are murdered by racist police, the police disproportionately single out men of color to kill.
To me, any time that there’s an injustice based on mistreating people according to their gender, that’s a feminist issue. Sean Bell was murdered because he was a male of color. Oscar Grant was murdered (or should I say, executed?) because he was a male of color. It’s gender injustice, and it is a feminist issue.