Large crowd demonstrates in Berlin in Germany in 1930s

Women marching along street, nurse marching alongside / young girls in native costumes marching along street, nurse marching alongside / overhead view of people marching through crowd / overhead view of large crowd gathering in square / large crowd gathering in square, large building in background / overhead view of large crowd gathering in square at the National Kaiser Wilhelm Monument / overhead view of large crowd gathering in square in front of the City Palace / two closer views of crowd, some holding signs; one sign features the hammer and sickle Communist symbol / overhead view of crowd / Note: exact year not known; documentation incomplete