This one is pretty old, from around 2000 I think. As per usual, this is probably a reference to a contemporary issue (the piece of land might be shaped like Poland on top) but the message is universal: infighting makes your group weaker, or more broadly, efforts that you think are advancing your interests might in the long run completely undermine them.
I don't post regularly because I am lazy about it, but I have a backlog of hundreds of Racz cartoons. They may see the light of day eventually.