I'm referring to the average American populace and not to the average HN poster. For example, I knew the details of the Tokyo Sarin Gas attacks and know that it was caused by a "new religion" cult but an average person outside Japan wouldn't really remember that as clearly as I am (unless you are somehow in Western Australia since a farm area there was refurbished to produce sarin). It is like 9/11 outside America: an average person knows it enough to remember whatever inconvenience they encountered that day but not the whole details.

Sunday Bloody Sunday is a well known song, don't forget. It wasn't that long ago that the IRA was putting bombs in trash cans. I think this is far more known in the US than you'd think, especially given it's intra-Christian violence.

If a person has watched Derry Girls on Netflix they know about as much as I do