Should the government be able to restrict civil liberties in a time of crisis. If so, why?

This is obviously an opinionated question, so you will have to decide on which side of the fence you reside.  However, some arguments for limiting civil rights during crisis can be made by looking at history.  The prime examples of which would be Lincoln suspending habeas corpus during the civil war, as a means to suppress uprisings in the border states and other troublesome areas and the internment of Japanese Americans during World War II due to concerns about espionage.  You can use either of these examples to prove your point regardless of your viewpoint.  For example, the suspension of habeas corpus probably did limit the chances of an uprising against Union authority.  However, the obvious down side is that people could be unjustly imprisoned without being brought before a judge or having due process of law.