In Chapter 6 of "Animal Farm", how do the pigs manage to prevent any dissent from the animals?

Ironically,writes at the beginning of
:

"All that year the animals worked like slaves. But they were happy in
their work; they grudged no effort or sacrifice, well aware that everything that they did was
for the benefit of themselves and those of their kind who would come after them, and not for a
pack of idle, thieving human beings."

The pigs have the animals convinced
that they are working for themselves. They usefor constant propaganda about the need for
self-sacrifice. Squealer is also great at re-writing history.He even re-writes the original
commandments.When the pigs move into the farmhouse to sleep in bed, he re-writes one commandment
to say, No animal shall sleep in a bed--with sheets. By adding "with sheets" he makes
it possible for the pigs to have their way without questions from the other animals Squealer
andalso make a scapegoat ofand the animals think that all the things that go wrong on the farm
are Snowball's fault even though theynever see him. And finally, there are always the dogs, who
are present in case the pigs need to use force. So by a combination of deceit, force and
outright lies, the pigs prevent the animals from openly dissenting.