But they could have done much more, like for example in the early thirties the SPD basically held the leadership positions in a lot of unions but they stubbornly refused to call for general strikes(what the KPD wanted but couldn't achieve because they didn't hold much sway in unions) to bring capitalism to fall in Germany, but they rather clung to electoral politics to preserve their precious Weimar Republic and we know where that led us.
But they could have done much more, like for example in the early thirties the SPD basically held the leadership positions in a lot of unions but they stubbornly refused to call for general strikes(what the KPD wanted but couldn't achieve because they didn't hold much sway in unions) to bring capitalism to fall in Germany, but they rather clung to electoral politics to preserve their precious Weimar Republic and we know where that led us.