Anarchists in fact often have a negative effect on protests, they regularly use far more extreme measures than any other protester at the demonstration and this can often distract from and distort the message behind the protests. Anarchist groups are infamous for trying to hijack protests that were not about anarchism; trying to use extreme and often violent measures to get an anarchist message across when the original protesters have no interest in anarchism whatsoever. Even Christiana cited by the proposition has seen violence in 2009 when 1500 people were arrested after setting fire to barricades and throwing fire bombs at police. [1] Anarchist groups have their own ideology, not the interests of oppressed groups at heart.  [1]