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And that anti-immigration sentiment is a major driver behind the Brexit, with 77 percent of British citizens saying immigration levels should be reduced.
At a gathering of far-right leaders in Austria earlier this month, the leader of Austria's Freedom Party said: "We are not against Europe as our opponents are always saying. We want another Europe, a better Europe, one of nations, values, culture and identity. The new fascism comes from the left and from radical Islam."
That statement seems to get at the heart of the issue. The Brexit represents, to these parties, a means of taking back sovereignty and national identity that they feel their countries have lost under the European Union.
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While many of these far-right groups are drawing on anti-immigration fears, they've also been drawing in supporters with economic arguments and emotional appeals.
After concerns over immigration, two of the biggest drivers in far-right growth in Europe have been economic and ethical. These right-wing parties tend to experience periods of growth during economic turmoil or when there are perceived loss of values or ways of life.
But maybe it's not over yet. People in the United Kingdom are already pushing back against leaving the European Union. There's a petition with well over 1.5 million signatures calling for another referendum. Since it's passed the 100,000-signature mark, Parliament will at least consider it for debate.
This video includes images from Getty Images and clips from The Wall Street Journal, RT, BBC and Journeyman Pictures. Music provided courtesy of APM Music.