Defiant protesters in Syria have continued their calls for President Assad to go despite his lifting of a decades long emergency rule.
New legislation was immediately introduced requiring Syrians to obtain permits to demonstrate.
Three people were shot dead in the city of Homs when they flouted the law.
The authorities have also arrested a prominent leftist, Mahmoud Issa.
President Bashar al-Assad had continued to respond to the last five weeks of unrest with a mixture of limited concessions and fierce crackdown.
The opposition says he must do more, such as scrapping laws giving immunity of prosecution to security officers.
Human rights campaigners say at least 20 pro-democracy protesters have been shot dead in clashes in Homs in the past few days.