Social fascism was a theory supported by Comintern during the 1930s, holding that social democracy was a variant of fascism due to sharing a corporatist economic model; Stalinists saw social democracy as standing in the way of communism. The Social Democratic Party of Germany was an example of a "social fascist" party, as it preached workers' rights when it had previously been involved in putting down a workers' uprising in the Ruhr during the German Revolution. The Communist Party of Germany even united with the Nazi Party in a failed attempt to bring down the SPD state government. Later, the Communist Party said that there was no difference between the Nazi Party and the SPD, and they said that the workers would eventually realize that communism, not fascism, offered a true way out of Germany's difficulties. Strasserism was another example of a social fascist group, as it paid special attention to the Nazi Party's socialist elements while also following some of Hitler's racist policies such as anti-Jewish sentiment.