TUNISIAN have arrested about 1,000 people after several nights of protests as a rights group warned against using excessive force and witnesses said demonstrators clashed with security forces in the city of Kasserine. Police fired tear gas as young people burned tyres and threw stones, witnesses in the impoverished city said, hours after protesters gathered in the capital Tunis to demand the release of detainees. The protests and clashes with police follow the 10th anniversary of a revolution that brought democracy but few material gains for most Tunisians, and anger is growing at chronic joblessness and poor state services. However,…