Well -- not to put a damper on things, but this year, on the 2nd of June, nearly 300 people died and over 1,200 people were injured in one of the most horrific train crashes in recent memory.
So that might be one reason why they didn't want to mark it this year in particular.
It's also the anniversary of the formation of the PLO and the coronation of Her Majesty Queen Elizabeth II. Whether either of these matter to any given person I suppose depends on the person.
Can we also take a minute to appreciate the guy that invented the lead additive and pushed for its adoption despite knowing the risks? I forgot his name but that fucker should live on in infamy.
Also invented CFCs (the stuff that put the hole in the ozone layer).
In his later years, he had limited mobility, so he designed a system of pulleys and levers to give him some degree of independence. Eventually, he was found strangled by his contraption.
Others have pointed out much better facts, but I’d like folks to note the top of this image: it says “reblogged by swarthysinner”, which I think is an awesome username.