Supporters of the al Qaeda-linked Ansar al Sharia Tunisia clashed with police in Kairouan and Tunis, where some 500 militants threw rocks, set fire to police cars, and replaced a Tunisian flag with al Qaeda’s banner; police fired tear gas at the protesters, who had defied a ban against holding gatherings this weekend. At least 14 people were wounded in the violence, including 11 policemen. Ansar al Sharia spokesman Saifeddine Rais was detained this morning.