Haven’t read Animal Farm. In know I need to.
Is this from where the moniker “Pigs” comes, in referring to police?
I don’t know. I do know it was common for the Marxist revolutionaries in the U.S. ( The Bill Ayers types) to call the police pigs.
No. In 'Animal Farm' the pigs become elites. All other animals toil to support them. The pigs were the object of the phrase from the book "All animals are equal but some are more equal than others."
I think it was during the Spanish Civil War that Republican propagandists coined "Fascist Pigs" to refer to their nationalist enemies. The American left probable adopted it from them.
'Animal Farm' is well worth reading.
And Orwell was a disillusioned participant in the Spanish Civil War on the Republican side. ‘Animal Farm’ was written after his political epiphany, about the rise of Stalin (Napoleon the pig in the book) and the moral bankruptcy of socialism. You could argue that ‘Animal Farm’ is related to the left’s calling police “pigs” but Orwell would actually have regarded the well heeled, tenured leftists as the pigs.