Napoleon has become more and more tyrannical. What words or phrases in Chapter 6 expose his authoritarian nature?

From the text:

....... in August Napoleon announced that there would be work on Sunday afternoons as well.

Napoleon announced that he had decided upon a new policy. From now onwards Animal Farm would engage in trade with the neighbouring farms: not, of course, for any commercial purpose, but simply in order to obtain certain materials which were urgently necessary.

Napoleon ended his speech with his usual cry of "Long live Animal Farm!" and after the singing of 'Beasts of England' the animals were dismissed.

Surely none of you wishes to see Jones back?"

"Comrades," he said quietly, "do you know who is responsible for this? Do you know the enemy who has come in the night and overthrown our windmill? SNOWBALL!"