This would require a POD prior to May 9, 1945.
Nah.
Here are my PODs:
-The Neumann circle manages to take over the FDP
-The left wing of the SPD prevails and they align them selfs more with the KPD and less with the liberal and capitalist parties.
-The KPD in east Germany is far more aggressive and tries to undermine the power of the western allies in their zones.
-Strauß succeeds during the Spiegel affair and gets some far right judge to convict Augstein of treason
-The BGS gets enlarged way earlier and is twice it’s OTL size in 1956. In OTL in recruited quite some questionable ex Wehrmacht and SS personal.
- The SED starts retaliation attacks in response to the KgU.
-The government introduces the emergency laws far earlier although in a far rougher sketch.
-The US, France and Britain are continuesly more afraid of a socialist takeover and start funding various secret organizations which are to act in case of an invasion or an insurrection.
-After the fall of Erhard the SPD campaigns on a much more revolutionary program, but still fails to get a majority. The far more right wing CDU/CSU and FDP still can’t agree to form a government. After much talking new elections are scheduled. The SED meanwhile starts funding revolutionary elements in the SPD.
-During a workers protest a policeman who is a Stasi agent shoots some JuSo representative in order to provoke revolution.
Protests quickly turn violent with protestors overpowering local police units in many urban area of the Ruhr and Hamburg. Out of fear of a revolution the CIA tells one of its paramilitary groups in NRW to attack identified local radicals and communist sympathizers.
Faced with Weimar conditions in some parts of the country and because of fear of a socialist takeover, the CDU/CSU, the FDP and some anti-communist members of the SPD vote to enact the Notstandsgesetze.
Brandt having lost control over his party resigns. The SPD disintegrates into three parties. The SED-West which is a radical revolutionary DDR funded party. The SVD which is the right wing of the SPD who supports the CDU/CSU and FDP actions. And lastly the SLD which is a shell of the old SPD.
The new Kiesinger junta quickly uses the emergency laws to crush all dissent in the streets by deploying the Bundeswehr and giving the BGS generals a free hand to finally put their wartime experiences in hunting partisans to use.
The DDR threatens military intervention but is stopped during the last minute by the Soviets and the threat of American retaliation.
After the majority of revolutionary elements is crushed Kiesinger establishes a System similarl to that of the interwar dictatorship in Austria.