After the German Revolution (1918-19), the left-wing movement was in a state of confusion
Moderate socialists of SPD were committed to parliamentary democracy
Communists, the KPD, pressed for a worker’s revolution
USPD stood for the creation of a radical socialist society within a democratic framework
In 1920, the USPD disbanded and members joined either the KPD or SPD
From 1920 onwards, there were two left-wing alternative parties with fundamental differences
The KPD believed that the establishment of parliamentary democracy fell short of their real aims
The KPD wanted the revolution to proceed on Marxist lines, leading to the creation of a one-party Communist state and major restructuring of Germany socially and economically
As a result of the Russian Revolution (1917), many German Communists believed that international revolution would spread throughout Europe
Opposition to the Republic was a complete rejection of the Weimar system by the extreme left
The extreme left was not prepared to be part of the democratic opposition or work within the parliamentary system to bring about desired changes
There was no chance of political cooperation between the moderate and extreme left, let alone coming together in one Socialist movement
The extreme left was totally committed to a very different version of German politics and society
The moderate left was one of the pillars of Weimar democracy
The KPD was a significant political force in the years 1919-23, enjoying support of 10-15% of the electorate
There were continuous revolutionary disturbances, protests, strikes, and uprisings by the extreme left
Despite the actions of the extreme left, many Germans began to have exaggerated fears about the possibility of an impending revolution due to right-wing propaganda
Looking back, it is clear that the extreme left posed much less of a threat to Weimar than believed at the time
The revolutionary left was never really likely to seize political power due to their own weaknesses and the effective resistance of Weimar governments
Even during the chaos and uncertainty of 1923, the extreme left's activities proved incapable of mounting a unified attack on Weimar democracy
Repression suffered at the hands of Freikorps removed some of the ablest and most spirited leaders of the extreme left, such as Liebknecht and Luxemburg
Later leadership of the extreme left suffered from internal divisions and disagreements on tactics
Weimar governments played on the differences within the extreme left by making concessions which split the movement
Authorities systematically repressed the rebels with considerable brutality
The extreme left was ultimately not powerful enough to lead a revolution against the Weimar Republic