Napoleon and Squealer would discuss how they can make Snowball the scapegoat, and convince the other animals of anything they want.
The narrator is an unnamed animal that does not really seem aware of what is going on, and therefore is not a pig. Since we don’t see what is going on behind closed doors in the pigs’ world, we have to imagine.
When Snowball is run off the farm, it is because he was a threat to Napoleon’s power. Napoleon has been carefully grooming the puppies to be his guards, so he has been planning this for a long time. Squealer, Napoleon’s right hand man, knows all about it. Squealer also seems to have more brains than Napoleon. A conversation might go like this.
Squealer: Now that Snowball is gone, we have total control.
Squealer: We can use this to our advantage. Whenever something happens that we need to explain away, we can say Snowball did it. Snowball stole your grain. Snowball vandalized the windmill. Snowball did this, Snowball did that. It’s perfect.
Napoleon: Go ahead then. Turn black into white.
I chose this imagined conversation because it shows that Squealer is the brains and the voice, and Napoleon is the brawn. Squealer is described as very persuasive, and the “others said of Squealer that he could turn black into white” (ch 2). Squealer will need to do this with Snowball, in order to spin his role. Squealer is always the one who is sent to explain things to others. He does so in this case.
That evening Squealer explained privately to the other animals that Napoleon had never in reality been opposed to the windmill. On the contrary, it was he who had advocated it in the beginning…. (ch 5)
With Snowball gone, the animals have a distraction. The pigs can blame anything they want on him, and the animals will accept it. It makes Squealer’s job very easy.