Romanian youngsters wear gas masks during a protest in front of the country's parliament building, in Bucharest, Romania, Saturday, Jan. 28, 2012. Hundreds of Romanians have protested against a proposed development by a Canadian mining company of Europe's largest cyanide based extraction open-cast gold mine in the Transylvanian town of Rosia Montana, saying it will damage the environment and will be of little benefit to Romanians.(AP Photo/Vadim Ghirda)