I recently purchased some postcards for historic sites in the US. The cards are of battlefields, massacre sites and cemeteries. They are all National Parks, Monuments or on National or State historic registers, so they do represent key (though sometimes awful) parts of our history. They’re not sensationalistic, gory or gross in any way. As a history buff, I wouldn’t blink an eye at receiving such a card so I didn’t think twice about buying them.
Now, however, I’m starting to second guess whether others would appreciate them as much as I would. I’m wondering if I should reserve them for RRs, Swaps and Lotteries where people can opt in to receiving them. What do you all think?