By Patrick J. Buchanan
Saturday, in Pittsburgh, a Sabbath celebration at the Tree of Life synagogue became the site of the largest mass murder of Jews in U.S. history. Eleven worshippers were killed by a racist gunman.
Friday, we learned the identity of the crazed criminal who mailed pipe bombs to a dozen leaders of the Democratic Party, including Barack Obama, Hillary Clinton and Joe Biden.
From restaurants to Capitol corridors, this campaign season we have seen ugly face-offs between leftist radicals and Republican senators.