On Nov. 1, protesters interrupted a Jewish speaker at the ceremony by shouting "Jews out" and "Jews are to blame for everything."

On November 15, protesters interrupted a speech given by Karl Rove on the Johns Hopkins University campus.

On 4 March, loyalist protesters, angered by the arrest of loyalist activist Willie Frazer, interrupted a meeting of the Northern Ireland Assembly.

Some protesters even interrupted a performance at the Palais Garnier, the city's ornate opera house, causing the police to evacuate the building and send 300 well-dressed theatergoers into the street.

In Ottawa, protesters interrupted the brief signing ceremony at the House of Commons, accusing Mr. Mulroney of lying to the Canadian people about trade.

When protesters interrupted the meeting by cheering for Webster, the police, acting under instructions from the mayor, did nothing to stop the disturbance.

But faculty members, noting that protesters had interrupted the president's remarks at Yale in 2001, said that he would most likely have faced demonstrations on the campus because of the war in Iraq.

But the live broadcast of the performance was pulled from air after protesters interrupted the concert at the Royal Albert Hall, west London.

Occupy protesters interrupted the press conference by chanting, "We are the 99 percent of Oakland."

The group catapulted into the national spotlight last week when protesters interrupted a televised Rutgers basketball game.