I would have to say the mongols, crazy fucks. Dont know if this is true or not but this makes me think the mongols are the craziest and therfor my favorite.
The mongols would raid villages and such and when they came to a town if they felt like it they would give them a choice "either we kill you all and destroy your town or you give us all your cats". So the town would agree to give them the cats and mongols would leave. They would get some tar or something very flammable, put it on all the cats, set them on fire, release them into the town to cause chaos, laugh THEN kill everyone.
Poor kitties, but seriously helarious.