People can commit terrorism based on their own agenda, whatever that might be. However, a common definition in which most experts of terrorism are agreed upon is that it consists of acts designed to create terror or fear among the populace in order to achieve coercion. The aim of the terrorist/s is to force another person to act in a certain manner that is involuntary through threat and intimidation.Terrorism is used to serve several objectives such as for political freedom, religious or ethnic recognition, revenge for social alienation, economic marginalization or ideological aim. Likewise, there are military, scientific, technological and social aspects of terrorist behavior. To be able to contain terrorists, one must go deeper and try to understand their motivations as to why they engage in terror tactics in the first place when other more peaceful means could be available to them to redress their grievances. Sociologists and behavioral scientists often are at a loss to explain this rather unusual human dimension (Smelser amp. Mitchell, 2002:vii).This paper looks at a particular segment of terrorism in a part of Europe which is the country of Spain. This country used to be quite peaceful but has lately had to contend with the threats of terrorism coming from its experience of dealing with the ETA or the Basque armed separatist organization as well as the growing domestic threat from Islamic militants within Spain itself (Woodworth, 2004:170) as well as that country’s own use of terrorist tactics.The advantages of terrorist organizations are they often decide to strike at will without any regard for the collateral damage they can cause. This means civilians and non-combatants are fair game in order for them to acquire the needed publicity and exposure for their cause. It is this indiscriminate use of violence that strikes fear and terror into a civilian populace and to those who are in power in the government.