Long-time ago in the Animal Kingdom, a sheep was passing and saw a lion crying inside a cage trapped and the lion begged the sheep to save him with a promise not to kill and eat it but the sheep refused. After much persuasion and for the sheep's gullibility it opened the cage for the lion.
Now the lion was very hungry having stayed in the cage for days without food. It quickly grabbed the sheep to kill and eat but the sheep reminded him of his promise. They were still there arguing when other animals came passing and they sought to know what happened. Both the lion and the sheep narrated their own side of the story but because of fear and in trying to gain favour in the sight of the lion, all the animals took side with the lion except the Tortoise who claimed he did not understand.
Now the Tortoise asked the lion to show them where he was before the sheep rescued him, he pointed at the cage. He asked again, "were you inside or outside when the sheep arrived"? The lion said he was inside. The tortoise again said, "ok, enter let’s see how difficult it could be inside". The lion entered and the tortoise locked him back inside.
In amazement, the other animals asked tortoise why he did that? and he replied: "if we allow him to eat the sheep today, he will still go hungry tomorrow and we don't know who will be next amongst us to be eaten tomorrow.
The Moral of this tale Don't support evil today because it doesn't affect you today, for tomorrow it could be your turn.