Talk to them about Jeffery Epstein and his connections with Hilary, Trump, etc. The stuff with Robert Maxwell (the Israeli super spy) and Ghislaine Maxwell. There is just so much there. If they haven't reached QAnon levels you could sway them via this.

Or get it straight from the horse's mouth and make them listen to trueanon. Their entire focus is on the Epstein conspiracy stuff initially and all the incestuous inter-connections in the bourgeoise. Theoretically seems like a decent entry point IMO. Although I am not sure how much it might appeal to boomers.

EDIT: I don't know your parents so feel free to completely ignore me. Also if your parents are hardly politically active you might wanna ignore them too (when it comes to politics) :p