What's something (opinion/sentiment, problem, culture, type of content) that has been present for longer than people might expect?
A political example might be the fact that according to gallup, people have supported a popular vote for the US presidency for more than 75 years (this article is 20 years old, but the numbers...
A political example might be the fact that according to gallup, people have supported a popular vote for the US presidency for more than 75 years (this article is 20 years old, but the numbers still stand), albeit the partisan difference in opinion seems to be more recent and it's not clear if people knew what to replace it, or if they knew about all the other faults in the US political system.
Other more cultural examples might be things like romans drawing dicks on Hadrian's wall, eating fast food and their timeless graffiti, surrealism being 100 years old as opposed to 'Zoomer humor', etc.
So, what are your examples?