[JURIST] Thousands of Paris police officers are enforcing a new ban on public rallies in the French capital "likely to start or fuel disorder" declared under emergency powers [JURIST report] granted to local authorities in the wake of widespread rioting by immigrant youths. Police said the ban, set to last from Saturday to Sunday morning, was prompted by hints of violence gleaned from numerous intercepted e-mails and text messages. France's National Police Chief Michel Gaudin [official biography in French] said well known locations including the Eiffel Tower were potential targets for further violence. Rioting began [JURIST report] in the country two weeks ago, and has steadily spread from suburban areas to the capital city, prompting the French government to declare a state of emergency. BBC has more.