Representatives of German state (constitutional) law define political extremism as "a set of political beliefs and aspirations... which are aimed at denying the democratic constitutional state and its fundamental values". Based on the definition, the criterion for recognising any "political belief or aspiration" as extremist is the notion of a democratic constitutional state. In line with this, the Federal Constitutional Court of the Federal Republic of Germany has given an expansive interpretation of a "free democratic state" that "constitutes a legal state order whose basis is the self-determination of the people according to the will of the majority, freedom and equality. It excludes all forms of despotism or arbitrariness. Among the basic principles of this order are at least: the protection of human rights as laid down in the Basic Law of Germany, the sovereignty of the people, the separation of powers, the responsibility of the government, the legitimacy of government, the independence of the judiciary and the principle of multi-partyism. According to article 21, paragraph 2 of the Basic Law of the Federal Republic of Germany (1949), political parties that "endeavour to harm or destroy the foundation of the free demo-cratic order or to endanger the existence of the Federal Republic of Germany" are declared unconstitutional by the Federal Constitutional Court of Germany. The possibility to ban political parties as provided for in the Basic Law of the Federal Republic of Germany guarantees the development of a democratic political system of the state. It is worth emphasising that the stability and democratism of the German political system and the stability of the constitutional order in the state depend not only on the prohibition provision in the Basic Law of the FRG, but above all on the ability of political parties to reach agreement on the basic principles of a "free democratic state system" and to implement these principles in the minds of the people. To realise these goals, Germany has the Federal Office for the Protection of the Basic Law of the Federal Republic of Germany of 1949, a public authority whose task is to control and supervise the legality of the activities of political parties. The forms of extremism in the Federal Republic of Germany are "left-wing extremism" and "right-wing extremism". In right-wing extremism, the older generation is gradually being freed from the aggressive youth, in an increased willingness to use force. Left-wing extremism has become less focused on global global themes - it has become more local and regional, more relatable and at the same time integrated. Because of the new nature of the development of extremism in a united Germany a left-right antagonism has emerged. At the same time, different tendencies of West and East Germany can be observed: in West Germany the struggle "left vs. right" prevails, in East Germany the struggle "right vs. left" prevails.
Conferences of Minister Presidents of the German States in 1948—1949 and Their Political Significance