If you've been on Facebook at all today, you've almost certainly come across at least a handful of profile photos that have been changed to red blocks with a pink equal sign in the centre.
They're meant to express support for same-sex marriage as the Supreme Court in the USA hears two cases this week that could decide the fate of marriage equality for a generation. Most of these red blocks look like the one above, but the internet could not allow an image this simple to go viral without at least a little creative embellishment:
To see 42 variations on the image: equal marriage
For the story on the 2 cases being heard go here