How does Orwell use Squealer to explore the power of language in Animal Farm?

Squealer is an expert manipulator of language. He is a politician that has perfected the art of "spin". Squealer can "spin" lies and half-truths into fact. Squealer was actually able to make the past malleable to suit Napoleon's agenda. Snowball, the only pig with Old Major's vision, was turned into a traitorous saboteur through Squealers manipulations of language and information. We, of course, have experienced this during the American election through countless stories of "fake news" that was turned into "fact".