In 1834, the first liberal newspaper appeared, one that gave much more emphasis to actual news content rather than opinions. The newspapers championed the Revolution of 1848 in Denmark. The new constitution of 1849 liberated the Danish press. Newspapers flourished in the second half of the 19th century, usually tied to one or another political party or labor union. Modernization, bringing in new features and mechanical techniques, appeared after 1900. The total circulation was 500,000 daily in 1901, more than doubling to 1.2 million in 1925. The German occupation brought informal censorship; some offending newspaper buildings were simply blown up by the Nazis. During the war, the underground produced 550 newspapers—small, surreptitiously printed sheets that encouraged sabotage and resistance.