WASHINGTON - Israel's critics have been out in full force since "Operation Cast Lead" began in Gaza last month.

Thousands of anti-Israel protestors have taken to the streets from Europe and America. Many are calling for the destruction of the Jewish state.

U.S., Athens, London Protest Gaza Conflict

It's the type of scene we're used to seeing in the Middle East: groups of angry Muslim men burning Israeli flags and chanting anti-Israel slogans.

Click the player to watch CBN News Terror Analyst Erick Stakelbeck's.  Click here for Pat Robertson's comments on the protests.

But this isn't the West Bank or Gaza. It's Athens, Greece - one of the cradles of Western civilization.

In London, a similar scene unfolded as riot police tried to control thousands of unruly anti-Israel protestors.

And here in the U.S., chants of "Allah is great" reverberated through the streets of New Orleans.

As Israel battles Hamas terrorists in Gaza, demonstrations against the Jewish state are intensifying.

Europeans have seen tens of thousands of anti-Israel protestors converge in Paris, Berlin, London and Madrid. American states from Florida to California to New York and Illinois have seen a similar phenomenon - and the large crowds have frequently gotten ugly.

"You see "Nuke Israel" signs and "Kill the Jews" signs and all of that. These are very belligerent protests. These are not peace marches in any sense," said Cliff May, president of the Foundation for Defense of Democracies.

"What you do not see at these protests," he continued, "are people saying 'We want peace. We understand that sacrifices will have to be made for peace. We understand that there will need to be compromises.' None of that."

So Who Are These Protestors?

The large majority are Muslims who have immigrated to Europe - a continent whose Muslim population is now 20 million strong and growing daily.

America is also seeing a growth in its Muslim population. It's a trend that's reflected in protests like a recent one in Washington, D.C.

"I cry every day, I cry every night," said demonstrator Fazh Shehad. "You have to stop the killing, you have to stop the killing of children of Gaza."

Western Muslims have even been joined by the radical left in condemning Israel.

Violence Breaks Out Across Europe

Harry van Bommel, a member of Holland's Socialist party and a Dutch parliamentarian, called for a new Palestinian intifada - or uprising -against Israelis. Indeed, there have been incidents of anti-Jewish violence in Europe over the past week.

A group of Arab men opened fire on Israeli workers at a Copenhagen Shopping Mall, injuring two.

Muslims in Antwerp, Belgium threatened to storm a Jewish neighborhood. And a gang of pro-Palestinian demonstrators rampaged through the heart of London's Jewish community.

"It's unclear whether there is a future for Jews in Europe - I would go that far," May asserted. "But it's unclear whether there is a future for Europeans in Europe as well.

Although they haven't been nearly as large, there have been several counter-protests in support of Israel here in the U.S. But so far, they've lacked the numbers and the volume of the growing anti-Israel bloc in the West.