http://www.tfproject.org/tfp/showpos...00&postcount=1
I think it’s a good rule. Political cartoons are mostly exaggerations, which often have no basis of truth in them, or such a distorted version of the truth that it becomes meaningless. People who agree with that side think 'funny' and people opposed think 'bullshit'.
As such I don't see much value to it as it will not lighten the mood but only polarize.