Blame+on+Snowball+-+Comrades,+he+said+quietly...

One thing that Stalin repeatedly did was blame the temporary failures of his economic programs (represented by the fallen windmill) on Trotsky (Snowball) and his men who were supposedly following his orders to undermine the efforts of Stalin’s economic endeavor. And that’s what Napoleon exactly did; he blamed the fall of the windmill (representing his failed economic program) on Snowball (Trotsky). Napoleon did not blame Snowball only for the fall of the windmill; Snowball was literally blamed for everything from broken windows to lost keys, mixed up seeds, blocked drains, and many more. Soon everything-bad-is-done-by-Snowball philosophy led to the Great Purge/Terror of the animals who most of the time confessed committing crimes under Snowball’s directions.

Also, Trotsky was murdered, outside of Russia, by a man of Stalin. Here, Napoleon (representing Stalin) has declared a death sentence on Snowball (representing Trotsky).

Addition to this reply-HSP Pigs who are staying in the farm started blaming Snowball for every bad thing that are happening including the windmill incident. The reason why they are doing this is because they want to respect Napoleon more in as a way of abandoning Snowball. Also they wanted to semi-forcefully justify the animals that Snowball was kicked out of the farm because he is a dangerous pig as in a way of covering up the fact that Napoleon kicked him out in order to obtain his power. It is very hard to write down what is in my head by writing right now...(it is so complicated) it might not make sense... ;(