This article proposes a short presentation ofhow the terrorist phenomenon is handled bydifferent Constitutions, in Europe and America,and specifically in Chile. The main goal of thisarticle will be to try understanding, given the(re)appearance of terrorism at an internationallevel, how public safety can be maintained andif it should prevail over individual liberties, andover their defense and respect; given that thoseliberties are the basis of the constitution of anycountry that pretends to be democratic. As partof this strength battle, it will also be interesting tosee if a “democratic” constitution is a fit weaponto fight against international terrorism, or if it is necessary to step back from those texts in orderto fight terrorism efficiently.