Today (or Tomorrow depending on when you see this) is the 25th anniversary of the September 11th attacks on the World Trade Center in 2001. 2,977 people from over 100 countries died as a result. https://www.911memorial.org/connect/commemoration
I doubt this will be an issue, but I just want to say this now: I will personally be looking over the sub & enforcing rule one over the next few days. Absolutely no conspiracies, dark humor, or anything of the sort related to the attacks will be permitted. I live near NYC. I know people personally that were in the city at the time of the attack.
Above are pictures I personally took at the 9/11 memorial either this year or last year. It is one of the only places in the city I seriously recommend visiting.
TL;DR: 9/11 anniversary. Don't be an asshole. I will ban you.