Well, Think Progress now has a summary of the most offensive things that Buchanan said before he was fired.

Why MSNBC Dumped Pat Buchanan: His 10 Most Outrageous Statements

These ones pissed me off the most.

4. Said the Jewish population in the United States dropped in the 90s because Jews aborted all their babies. Buchanan explains that the decline in the American Jewish population during the 1990s (a decline that a Brandeis study says never occurred), “is a result of the collective decision of Jews themselves. From Betty Friedan to Gloria Steinem in the 1970s to Ruth Bader Ginsburg today, Jewish women have led the battle for abortion rights. The community followed.”

5.Asserted Anders Breivik, who murdered 77 people including 69 teens in Norway, “may have been right.” Buchanan called Breivik a coward, evil, and cold-blooded, and then proceeded to defend his twisted rationale for the killings: “As for a climactic conflict between a once-Christian West and an Islamic world that is growing in numbers and advancing inexorably into Europe for the third time in 14 centuries, on this one, Breivik may be right.”

8.Argued that Poland and the United Kingdom had it coming in World War II. Buchanan seems to suggest in a 2009 column that World War II—and all the atrocities that accompanied it—was really the fault of Poland and Britain, for refusing to engage in diplomacy with Germany. “Why did Warsaw not negotiate with Berlin, which was hinting at an offer of compensatory territory in Slovakia? Because the Poles had a war guarantee from Britain that, should Germany attack, Britainand her empire would come to Poland’s rescue.”

9.Dabbled in Holocaust denial. Pat Buchanan danced alarmingly close to denying key facts of the Holocaust. In a 1990 column for the New York Post, he defended convicted Nazi war criminal Ivan Demjanjuk (whom he later compared to Jesus Christ) against charges from Holocaust survivors that he was guilty of murder by accusing the survivors of misremembering all of it: “This so-called ‘Holocaust Survivor Syndrome’ involves ‘group fantasies of martyrdom and heroics.’ Reportedly, half of the 20,000 survivor testimonies in Yad Vashem memorial in Jerusalem are considered ‘unreliable,’ not to be used in trials[…]The problem is: Diesel engines do not emit enough carbon monoxide to kill anybody.”

10. Argued Hitler was an individual of “great courage.” That’s just one of the quotes that the Anti-Defamation League attributes to Buchanan in their compendium of offensive remarks from Buchanan over the years. In 1977, he qualified his labeling of Hitler as racist and anti-semitic by adding that “he was also an individual of great courage, a soldier’s soldier in the Great War, a leader steeped in the history of Europe, who possessed oratorical powers that could awe even those who despised him[…]His genius was an intuitive sense of the mushiness, the character flaws, the weakness masquerading as morality that was in the hearts of the statesmen who stood in his path.”