Here’s another thing I just ran across on Facebook.
Not a bad summary, but it does leave out a couple of things.
Democratic socialists in 1914 supported their own national ruling classes in WWI, rejecting socialist internationalism, beginning with the German social democracy voting in favor of war bonds.
Democratic socialists (Mensheviks) in Russia in 1917, unable to control the working class opposition to the war, collaborated with Kornilov in his openly-avowed plan to massacre the Petrograd workers. Then, when Kornilov revealed that he planned to crush the Democratic Socialists along with the workers, they turned against him–by releasing the Bolsheviks they had jailed and asking for their help.
Democratic socialists in Germany handed state power back to the bourgeoisie in 1918 after the working class had taken power in spite of them; this paved the way for Hitler.
Democratic socialists betrayed the British coal miners in 1921, fending off a general strike that could have led to the taking of power by the working class. *
Democratic socialists also refused to unite with the Communist Party against Hitler (to be fair, so did the Stalinist Communist Party), thus dividing the working class and permitting the Nazis to take power without a shot being fired.
Democratic socialists, by opposing the exportation of jobs (see photo above), give credence to the notion that the worker in another country is the enemy of the worker in their country, which helps keep the working class divided.
Democratic socialists, by their reliance on unions (see photo above), find themselves supporting the trade union bureaucrats who collaborate with the corporations against the interests of the rank-and-file.
Democratic socialists begin by trying to make capitalism more equitable and democratic, but, because they accept private property as a given, and capitalism as a given, respond to circumstances where capitalism and democracy are incompatible by giving their support to capitalism. So long as we live in a class society, the State will be an instrument of the repression of one class by another. So long as we live in a capitalist society, the State will serve the capitalists. The refusal to support a direct struggle for state power disarms the working class before its enemies, however well-intentioned the democratic socialist might be.
* The leaders of the Transport Workers Union, Williams and Thomas, were both leaders of the Labor Party, the British section of the International Social Democracy: the 2nd International, and acted with the support of the party.