Just in case you were starting to think that maybe there isn't a day for absolutely everything, here we are. It's "Wave At The Surveillance Cameras" day. But, why?
Short answer: For fun. Long answer: Some kind of protest at the Big Brother-esque surveillance of the global population, possibly by the Illuminati. Or something.
This terribad video explains things as best as it can be, which is saying something.
Whilst obviously a useful tool, the creators of Wave At The Surveillance Cameras Day felt the cameras can be the topic of some pretty heavy discussion with lack of privacy and accusations of government control dominating the conversation.
So if you spot one on your travels today, give it a smile and a wave -- you never know who's watching.