Here's one account:
About three years ago, I saw Krauthammer flip out in synagogue on Yom Kippur. The rabbi had offered some timid endorsement of peace — peace essentially on Israel’s terms — but peace anyway. Krauthammer went nuts. He actually started bellowing at the rabbi, from his wheel chair in the aisle. People tried to “shush” him. It was, after all, the holiest day of the year. But Krauthammer kept howling until the rabbi apologized. The man is as arrogant as he is thuggish. Who screams at the rabbi at services? For advocating peace?Elsewhere, the man had frequently cheered the slaughter of innocents through bombing.
The mosque kicked Tsarnaev out of its congregation.