Violence, it seems, is increasingly the preferred language of Germany's estimated 6,300 leftwing extremists.
Last month, Germany's interior ministry announced that there were 9,375 leftwing crimes committed in 2009 - a startling 39.4 per cent rise on the previous year.
For the first time since the current system of record keeping began in 2001, assaults committed by the left outnumbered those by the right - 849 against 800 - most of which were directed either at police during rallies or at neo-Nazis.
Yet the causes of this surge in crime and violence remain frustratingly opaque.
Florian Herbs, 26, an unemployed graphic designer and member of the radical group Antifascist Revolutionary Action Berlin (Arab), admits that car burning has become a fashionable "cult".So what do they want? Experts say leftwing German militants today are very different from their predecessors.
"The leftwing extremist scene is made up of a very heterogeneous group of people with different ideological views," says Stefan Ruppert, an expert on extremism and an MP for the pro-business Free Democrats party.
"Only the vague goal of overthrowing our existing social order serves as a unifying effect. This complexity ... makes it all the more difficult to grasp the problem as a whole and work out solutions."His assessment is borne out by Herbs, who says his Arab group, which has 30 to 40 members, is one of about 30 radical groups in the Kreuzberg district alone.