Your answer was in the first sentence of the article I posted, to wit:
"I have long had a pet peeve about the vulgar misuse and distortion of the Jewish concept of Tikkun Olam (repair of the world) by assimilationist Jewish liberals in the United States and elsewhere."
In line with his left-wing Marxist/Socialist leanings, Bill Clinton is an avid reader of Tikkun Magazine and wrote lots of letters to it. That's supposedly the "pagan" perversion of Tikkun Olam that the writer of the article is bashing.
You'd have to check with the writer of the article that is the title of this thread to find out if he's a subscriber to Tikkun magazine.
He probably is... "Know Thy Enemy"..