German political activity and Stalin?

It was in 1981 that Hermann Weber, a well known German historian and political scientist, published a very important study on the strategy and tactics of the German Communist Party (Kommunistische Partei Deutschlands or KPD) between 1929 and 1933. During this critical period most German Communists described the Social-Democrats as "Social-Fascists," they were perceived as the greater enemy (Hauptfeind), an enemy worse than the Nazis, that is. This was also the line followed by the Soviet controlled Communist International (Comintern) which instructed the German Communist Party on July 20, 1931, to form an alliance with the Nazis with a view to bringing about the downfall of Prussia's moderate Social-Democratic, Centrist and Liberal-Democratic coalition government.