I personally feel that there is nothing wrong in people going on hunger strikes provided the reason for which they go on a fast is for a good cause. Hunger strike is perhaps the most non violent way of getting one's wish fulfilled. The people who go on hunger strikes do not eat any solid food but they live on a liquid diet for days and weeks. The Father of our Nation, Mahatma Gandhi also went on hunger strike. Gandhi was imprisoned in 1922, 1930, 1933 and in 1942. While in prison, he went on hunger strike. While the hunger strike inflicts pain and weakness on the person who does the strike, it will automatically create a sense of guilt to the opponent. As far as I know, hunger strikes are far better than wars which causes loss to so many people. Wars lead to deaths and irreparable losses to many. But hunger strikes aren't that invasive.