The German Trade Union Federation (DGB), the most influential group outside parliament and historically interwoven with the SPD, massively stepped up their discourse against Agenda 2010, especially prior to the Hartz IV law in July 2004, but the rumble subsided quickly after a summit meeting with Schröder in August 2004. The trade unions suffered from a lot of attrition in that process as their members defected in droves either because the unions' attitude was perceived as too lenient or as too strongly opposed. There were no strikes against Agenda 2010 as the German constitution prohibits politically motivated strikes, but some demonstrations at least were organized and supported by the unions.