[snip] Patrice Ribeiro, national secretary of the Synergie police officers union, said he suspected rioters aimed to turn their neighbourhoods into no-go zones for the French state so that underground economies of drug-trafficking and racketeering can thrive. Criminal gangs want "to stop police, all state representatives from coming and then, when calm returns, business goes well," he said. [snip] Traffic was halted Thursday morning on a suburban commuter line which links Paris to Charles de Gaulle airport after stone-throwing rioters attacked two trains. A female passenger was slightly injured by broken glass.