What are the weaknesses of the constitution

Basic Law

Constitution of the Federal Republic of Germany. The GG came into force in 1949 as a provisional constitution for West Germany. Since the accession of the GDR to the Federal Republic of Germany on October 3rd, 1990, the GG has applied to the whole of Germany.
-The Basic Law came into force on May 23, 1949 and was then the provisional constitution of the (West German) Federal Republic of Germany. Since the accession of the GDR to the Federal Republic of Germany on October 3rd, 1990, the GG has been valid for all of Germany.

In order to work out the Basic Law, on September 1, 1948, members of the state parliaments of West Germany and Berlin were in
Parliamentary Council met in Bonn. They were shaped by the experiences of the Hitler dictatorship, which had only collapsed three years earlier. It all began in 1933 with the abolition of basic and human rights, now the constitution-makers put at the top of the Basic Law the commitment to inviolable human dignity, which the state must first and foremost respect and protect.

This is followed by a catalog of basic rights to which everyone is entitled and which the state must not encroach. They are not just fine words, but directly applicable law. Parliament, government and the judiciary must adhere to them. It is expressly stipulated that the Federal Republic of Germany has to be a democracy, a federal state, a constitutional state and a welfare state.

In the eyes of the authors of the Basic Law, the constitution of the Weimar Republic (1919-1933) had weaknesses that had favored the rise of Hitler. They wanted to avoid these weaknesses now. That is why they wrote in the Basic Law that parties that fight the democratic order can be banned, that the head of government can only be overthrown if parliament is able to elect a successor, and that the Federal President is no longer directly elected by the people and also has fewer rights than the Reich President once did. Also in response to bad experiences in the Weimar Republic, direct participation of the people in legislation in the form of referendums at the federal level is no longer provided (but it does exist in the federal states).

The Basic Law has been changed 57 times since 1949 (as of July 2009). Such an addition, deletion or amendment of articles always requires a 2/3 majority in the Bundestag and Bundesrat. An amendment to the Basic Law that would abolish the federal state and the participation of the states in legislation is inadmissible. The principles of Article 1 (inviolability of human dignity) and Article 20 (free democratic basic order) must also not be changed.

Source: Thurich, Eckart: pocket politik. Democracy in Germany. revised New edition Bonn: Federal Agency for Civic Education 2011.