Garu'a Shebagoyim Harag
This sub-human who shot and killed a guard at the US Holocaust Museum in Washington DC wrote a book with the worst kind of accusatory lies against Jews. Even the name of his book "Tob Shebbe Goyim Harog", which he claims in the title page and on page 34 of his book as being from Sanhedrin 59 is not there - rather, it's in Mesechet Soferim the end of פרק טו.
And of course, it doesn't mean that one should go out to kill the best of the Gentiles like JAMES W. VON BRUNN ימ"ש wants you to believe. Actually, the גירסא in this version of סופרים is הכשר שבגוים בשעת מלחמה הרוג, which tells you that it only refers to times of war. But even with the other גירסא, we can find תוס' ע"ז כו: ד"ה ולא מורידין who says in the name of the Yerushalmi that it means only times of war, although, I couldn't find the Yerushalmi (which you'd think would be in Kiddushin 4:11).
One idiom is certain - שם רשעים ירקב applies to this piece of trash.
Update: The Vicious Babushka says basically the same thing.