Terorism is something serious. Even though it involves phisical harming, so it's wrong, it actually is a way of those people expressing themselves. They feel unimportant and mistreated so they want to do something that will make them feel known. I also think that they have a legitimate reason of doing what they are doing. Even if it isn't the right way to tell your point, terotists might think that this is the right way to go since nobody listens to them otherwise.
