You have reformed terrorists. Then why not reform those who are doing unwanted things in the name of spirituality?
Some people will not change in life, because they are like that. Can you convert a snake, or a scorpion into a cow? We have to understand this is a snake, this is a scorpion, and this is a cow. (You) cannot think of reforming some people. You can correct terrorists. But it is difficult to correct those who do evil intentionally. Not that it is impossible; but it is difficult. Their lineage also exists for a long time. Ravana also donned garb of a sage and abducted Sita. There are some fake sages like Ravana these days also. What to do? For some time it will go on, then suddenly they’ll have a fall. It is not good for them. Those who follow desires will get a lesson. For our part, we should take good from everywhere.
There is a saying in Sanskrit, ‘Durjanam Prathamam Vande Sujanam Tadanantaram’. Worship the bad person also. The bad people are ruining themselves and teaching you a lesson., So convey your gratitude to them - since at their cost, while falling in a pit and getting ruined - they are teaching you a lesson.