Interesting. It was private for me too. But I clicked to read the full list of the 474 4-star reviews and scrolled and found it. From there I found a direct link to his review which still works (as of a few hours after his name leaked) at:
https://www.goodreads.com/review/show/4065667863
He justifies Ted Kaczynski saying:
"He was a violent individual - rightfully imprisoned - who maimed innocent people. While these actions tend to be characterized as those of a crazy luddite, however, they are more accurately seen as those of an extreme political revolutionary."
The quote about "Violence never solved anything..." it turns out are not his words, they are part of him quoting someone else in his review; but I wasn't able to find the source of the long message he quoted; just news articles from the last few hours mentioning the quote.
Another notable GoodReads comment (from Luigi) regarding another book:
"I love Steve-O. His life is full of wild stories, and his addictive personality is one I relate to. "
Gave a 4 star review to the Unabomber manifesto!
quote from his review:
"Violence never solved anything" is a statement uttered by cowards and predators.""