Neo-Nazi marches in Dresden and left-wing groups had been relatively weak for years. With the emergence of the "Dresden Nazifrei" alliance (Dresden without Nazis), the Nazi march was blocked from marching for the first time in 2010 by thousands of demonstrators, again in 2011 and prevented entirely in 2012. While part of East Germany, Dresden was in the so-called "valley of the clueless" ("Tal der Ahnungslosen"), with its citizens out of the reach of the Western radio and television that citizens elsewhere in the East were able to listen to illegally. Dresden continued to be different after the German reunification; while most states in
Dresden Photomasks. Their factories attract many suppliers of material and cleanroom technology enterprises to Dresden. The pharmaceutical sector developed at the end of the 19th century. The 'Sächsisches Serumwerk Dresden' (Saxon Serum Plant, Dresden), owned by GlaxoSmithKline, is a global leader in vaccine production. Another traditional pharmaceuticals producer is Arzneimittelwerke Dresden (Pharmaceutical Works, Dresden). A third traditional branch is that of mechanical and electrical engineering. Major employers are the Volkswagen Transparent Factory, EADS Elbe Flugzeugwerke (Elbe Aircraft Works), Siemens and Linde-KCA-Dresden. The tourism industry enjoys high revenue and supports many employees. There are around one hundred bigger hotels in Dresden, many