Sometimes a whole project can be summed up in one single picture.

When you see men in suits and cops on bikes protesting together for Occupy Wall Street, or of a bunch of zombies in apartheid party colors taking over the civic plaza in Cape Town, you sort of "get" the whole story all at once... or, at the very least, you're intrigued enough that you spend a minute or two to figure it out.

Our friends at Beautiful Trouble call this Action Logic, and it's probably the most important guideline behind making an effective creative action: what will the picture look like?

Sometimes, too, the picture exists only within our collective heads—like when Wall Street brokers stopped trading and dove for the dollar bills that the Yippies threw down upon them. Or did they?