Hans-Gerhart "Joscha" Schmierer (born 1 April 1942) is a German politician, author, and former radical activist. He has been a significant figure in left-wing politics and later transitioned into roles in international relations and policy advisory.

Joscha Schmierer was born in Stuttgart. He initially aimed for an academic career and planned to earn a Ph.D. under the mentorship of historian Werner Conze. However, in a 1969 public forum, Schmierer dramatically hurled eggs at Conze to protest his defense of the Wehrmacht's actions in Eastern Europe. This act not only made headlines but also terminated his academic pursuits.^[1]

In the late '60s, Schmierer was active in student politics, serving on the national board of the Socialist German Student Union (SDS) in 1968. He rose to prominence in 1973 as a co-founder of the Communist League of West Germany (KBW), a Maoist organization. Schmierer was a guiding force in the KBW until its disbandment in 1985. In a controversial move, he led a KBW delegation to Cambodia in December 1978 to express solidarity with dictator Pol Pot.^[2]

Schmierer found himself behind bars for two-thirds of an eight-month sentence in 1975, due to "serious breach of the peace" during a 1970 protest. During his incarceration, Martin Fochler assumed his role as secretary of the KBW's Central Committee.^[1]

Throughout the turbulent '70s, Schmierer and his KBW often clashed ideologically with more anarchist-leaning groups. One such group was the Revolutionary Struggle, which included notable figures like Joschka Fischer and Daniel Cohn-Bendit.

While Schmierer has evolved over the years, he's never completely disavowed his radical past. Instead, he's reinterpreted his early stances, positioning them within a broader framework advocating for democracy.^[3]