They then came across a few more democrats who said that it wasn't fair for the old man to sit on the mule and make the little boy walk so they decided they'd both walk so they wouldn't be shamed by other people.
Then they came across another group of Democrats who told them how stupid they were for not riding the mule so they both rode it.
They passed more Democrats and they started throwing rocks at the boy and the old man for putting so much weight on the mule by riding it.
Having been told everything they were doing was wrong according to Democrats, they decided to try and carry the mule. While crossing a tall bridge the weight of the mule overtook them and it slipped out of their hands and went over the side of the bridge and was killed. Moral to the story: "If you try to please Democrats you might as well kiss your ass goodbye."