If this fear is eradicated then these groups lose their appeal and there is a lesser chance of them becoming successful, or of other groups copying their methods.
Although fear holds a lot of people back from what they want to achieve, some people use that same fear as motivation. Even though they are afraid, it does not hold them back from what they want to accomplish. A great example of someone like this is Noble Prize winner Malala Yousafazi. Malala is a Muslim teenager who protested her not being allowed to be educated. Even though she had fear of what would happen, she did not let it affect her point of view because was not only trying to help herself but she was also trying to help other
people.