[jeffdn]

This seems like the kind of thing you could take to your skip-level or even higher in the management chain. A single new manager causing multiple long-serving employees to become disgruntled should be a bright red flag to a competent leadership team.

[irrational]

Unfortunately, we can’t do that. Not everyone on the team is white, but enough are that if we complained about the new manager it would most likely come off as racism. Better to find a new job first and then let HR know of our concerns in the exit interview.