The first Meme

Keep Calm and Carry On was a poster produced by the British government in 1939 during the beginning of the Second World War, intended to raise the morale of the British public in the event of invasion. Seeing only limited distribution, it was little known. The poster was rediscovered in 2000 and has been re-issued by a number of private companies, and used as the decorative theme for a range of products.

- source: Wikipedia


Then the internet took over the spread of the poster via meme.

And my all time favourite: