Responses to dissent have varied. Human Rights Watch writes that "the Ahmadinejad government, in a pronounced shift from the policy under former president Mohammed Khatami, has shown no tolerance for peaceful protests and gatherings." In December 2006, Ahmadinejad advised officials not to disturb students who engaged in a protest during a speech of his at the Amirkabir University of Technology in Tehran, although speakers at other protests have included among their complaints that there had been a crackdown on dissent at universities since Ahmadinejad was elected.