Communist Win

In the years 1918 to 1919 a revolution in germany there was, between Communists and the Weimar Republic,

but what if the Spartacus League aka the Free Socialist Republic of Germany have won?

POD
In Berlin, January 25 1919, Friedrich Ebert, SPD leader and future president of the Weimar Republic is shot in a riot, the riot grews larger and larger, after the communist seize the Reichtag and burn it, the Free Socialist Republic of Germany is created