I would definitely schedule a meeting with the priest, and then proceed to rip him apart. Tell him in no uncertain terms that the next time he does this, that you will openly protest during his sermon and you will “call him out” on the spot. If he does this again, call him out.
Openly protest in front of your fellow parishioners, talk to your fellow parishioners about it, tell them the priest is a fool, and start a campaign to have him replaced.
Bold, even bolder than I have been. I am not Catholic, but worship with another denomination whose national leaders are profoundly leftist and my current senior minister is young and left. I've told him that we may not be long for each other.
Some years ago I noticeably walked out of two sermons by our then interim senior minister. He was spouting either leftist economics in one and voodoo climate science in another. I then took a 6 month sabbatical awaiting his departure and wrote a protest song "Jesus Thinks a Lot Like Me".
Right now it's day-to-day. On my denomination's FB page I am observing pained conservatives responding to lofty pronouncements of peace and unity. I am responding myself to a daily prayer posting. I added "Pray that we do not meet what we see as bigotry with what they see as vengeance." I followed with "Pray that we do not do evil to accomplish good and then call both good." I'm sure that many will not understand. That is the most painful thing of all.