What is the message that Orwell wanted to convey about dictatorship

Orwell's message is that any society with absolute power leaders will eventually collapse because leaders will inevitably operate powers in their favour.

Explanation:

In the novel titled Animal Far, George Orwell writes a story by warning people about the risks involved in assuming and rising to power in politics, especially in a communist state.

His novel has a slight reference to the Russian revolution, which is allegorical in nature. He refers to the Bolshevik revolution where Stalin used his power to oppress a lot of people. This is quite similar to Napoleon in the novel who rose to power and become a tyrant.