Justice for Floyd? An opportunity to vocalise about our own issues with policing?

I don't know how else to explain it? People protest to vocalise about issues, and attempt to encourage change by bringing attention to those issues.

Sympathetic protests are not a new phenomenon by any means, neither is those sympathetic protests also being used as a platform for addressing more local or national issues.

Again, you're playing dumb so you can deliberately "not get it" because these protests are about something you don't give a shit about. It's no big deal, just say "I think these protests are dumb because I don't give a shit about the issue at hand." or say nothing at all.