Boomer blinders
A metaphor for the rose-tinted glasses effect that boomers seem to have on their world views and ideals, that ends up spreading to other people who share their social circles. Can infect millenials, Gen-X's, Gen-Z's and even some Gen-C's.
Dad always kept going on and on about how great America is, and how we have freedom and we should be proud, despite the fact that guns don't keep us safe, in fact more people are killed by guns in America than anywhere else in the world. Pop really needs to take off his boomer blinders and look at the world from reality.