Independent Social Democratic Party of Germany
The RSP and the RSAP are very comparable to other dissident Marxist groups within the anti-Stalinist left, including the left-communist movement, the Trotskyist movement (e.g. the French Workers' Struggle or American Workers Party, or parties formed as Marxist opposition within social-democratic parties, like Independent Social Democratic Party of Germany. Trotsky criticised the RSP/RSAP as "centrist".