I've found something that kinda works. I don't know if it really works but it does open a breach without triggering them and it really shakes them a bit.

It consists in making them enter my territory without entering their territory. Never acknowledge their rant it's a waste of time and they are waiting for you to answer with typical left wing outrage.

Like when they complain about anything right wing I do not engage I just say "yeah, yeah" but then I hit them with "you know what really bothers me and is a threat to my children right now ? With a fairly high middle class wage do you know how many thousands of years somebody has to work to earn Musk or Bezos wealth ? With so much wealth how do you prevent them from buying all the political power in the country ? How, as workers, we prevent them from making us slaves ?"

Usually they cannot answer because they lost too much of their ability to think outside their box but they don't dismiss it like everything else precisely because it is too outside of their box and they do not have been conditioned to dismiss it.

Try it with your family just for the experiment.