Earlier quoted context omitted.
No, the overwhelming dominance in cancel culture over the last few years has been from the left. Sure, the right has also been up to its old tricks in tired corners (it dominated in previous times like the McCarthy era), but lets be realistic about who the modern problem is mainly with in the West or we won't solve it.
What books were banned by "the left"?
Not banning but altering would be one form of censorship, e.g., "Roald Dahl books rewritten to remove language deemed offensive":
* https://www.theguardian.com/books/2023/feb/18/roald-dahl-boo...
"Why I Decided to Update the Language in Ursula K. Le Guin’s Children’s Books":
* https://lithub.com/why-i-decided-to-update-the-language-in-u...
"D&D: WotC’s New Batch Of Errata Removes Racial Alignments, Retcons Drow":
* https://www.belloflostsouls.net/2021/12/dd-wotc-removes-raci...
To quote George Orwell's 1984: "Who controls the past controls the future. Who controls the present controls the past." The past is being rewritten (as opposed to leaving the original language and simply putting a forward in explaining things).