Freedom fighter
Freedom fighter is a 'relativistic' term - this means a person decides by his or her point of view if he call some persons or groups freedom fighters or not. If people do not support his goals, they probably use more 'negative' terms like insurgent, terrorist, rebel or criminal. Freedom fighters are often called terrorists by their opponents if they hurt civilians. However not all freedom fighters hurt civilians. Some freedom fighters damage the opposing military. Some freedom fighters damage property - this is called sabotage. There are also freedom fighters who do not use violence at all. For example the Mahatma Gandhi and the Dalai Lama.