I'm sure you will instruct them and guide them, kindly but gently to see the error of their ways! I know my grandparents were on this "Roosevelt" kick (best President their ever was), when I tried to explain when Carter was President and the mortgage rate on my house was 17%! that perhaps, you know, he wasn't doing all that good. I was told "history will prove out what a great President he is". haha, well history has not quite proven that out, I'm sure he's a wonderful individual, but a great President he was not!
I dunno. My parents get really upset if I say anything back to them. But I can try.