It is true that a lot of innocent people die by the actions of terrorists. It is terrible; terrorists put hundreds of bombs in cars, shops, and places where politicians or policemen work. They do not mind if many people die. They can remotely detonate explosives thanks to technology.
Terrorists are people with serious problems, and they need psychological therapy because they are ill. They think they kill people to defend their ideas but they are wrong. Nobody can think that killing innocent people is a way of achieving their objectives because their hands are full of blood.
All of us must face terrorism. In Spain, we know it very well. Terrorism is a kind of crime which affects our society as a whole because the important thing is not the crime itself but the insecurity in our society.
Anyway it is not ethic kill people.
In addition, developing technology causes arising of a new kind of terrorism whose name is "hackers". They can access any computer via the network.