Do you think there might be legitimate situations in which the government limits freedom of religious expression?

Project description
On Faith: A Conversation on Religion with Jon Meacham and Sally Quinn question for April 19, 2007 (Do you think there might be legitimate situations in which the

government limits freedom of religious expression? Is there a danger of religious behavior becoming so extreme and/or bizarre that it becomes a threat to society?)
Write a discussion paper regarding based on the article on faith and answer the above question write your opinion.

http://onfaith.washingtonpost.com/onfaith/2010/05/freedom_of_religion_v_freedom/all.html