I've run across very few good cartoons about Keynesian economics. If my aging memory is correct, I've only posted two of them.
But at least they're both very good. We have one involving Obama, sharks, and a lifeboat, and another one involving an overburdened jockey.
Now we have a third cartoon, by Australian freelancer Jon Kudelka, to add to the collection:
To provide a bit of additional background, the cartoon is channeling Bastiat's broken-window insight that make-work projects don't create prosperity, as explained in this short video narrated by Tom Palmer.
I make similar points in this post mocking Paul Krugman's wish for an alien invasion and this post explaining why Obama's green energy programs lead to net job destruction.
P.S. This Wizard of Id parody is the best cartoon about economics, but it teaches about labor markets rather than Keynesianism.