Support for extreme political movements is building across Europe as the economy starts worsening again – and analysts and anti-extremist organizations are increasingly worried that parties on the left- or right-wing fringes will gain more political power.

Greek riot policemen clash with protestors in the center of Athens on May 5, 2010.

The continent has a worrying precedent in the rise to power of fascist dictatorships in Germany, Italy and Spain during the 1930s, following the Great Depression, and the rise of the Soviet Union before then.