No-one said overthrowing the capitalist system was going to be easy.
They may have pitched their tents in cities from Philadelphia to Paris - braving pepper-spraying police officers and poor sanitary conditions.
But now the Occupy movement's hardy protesters are putting themselves even further to the test by taking on plummeting temperatures - and the world's rich and famous - by building an igloo camp outside the World Economic Forum.
Activists armed with pick-axes carved up blocks of ice as they prepared to dig in for the annual gathering at the Swiss ski-resort of Davos, which starts tomorrow.
