Prior to the Air France hijacking , members of the later Revolutionary Cells took part in bombings of premises of ITT in Berlin and Nuremberg , the Federal Constitutional Court of Germany in Karlsruhe . Revolutionary Cells member Hans-Joachim Klein took part in the December 1975 raid on the Vienna OPEC conference , together with Carlos and Gabriele Kröcher-Tiedemann of J2M
December 1975 raid
OPEC siege
Revolutionary Cells (German group)