They+added+that+Snowball+had+privately+admitted+to+them+that+he+had+been+Jones's+secret+agent+for+years+past.+When+they+had+finished+their+confession,+the+dogs+promptly+tore+their+throats+out,

Christine K. "All but one of the defendants confessed to every accusation made against them, were found guilty, and were shot the day after" (17).

"Why did the accused confess to such absurd crimes? In some cases they did so because they had been promised before the trial that they would not be executed if they confessed" (17).

I think this event represents the show trials in which important Party members were given public trials and executed. The four pigs were also important members of the Animal Farm, as they were the few who ruled at the top, but were arrested and executed because they were accused of helping Snowball (Trotsky). Then, in the show trials, the Party members confessed to absurd things that they had not done and were executed, like how the four pigs confessed that they were helping Snowball (which they probably did not do) and were killed by the dogs, which represent the secret police, or NKVD.