Why do muslims...?

Why do they have a the largest organized groups of bloodthirsty terrorists routinely carying out horrific killings in the name of religion. While others can name isolated incidents involving other religions nothing like these recent and constant attacks all over the world. People end up fearing and vigorously hating muslims instead of respecting or embracing them. They dont get their intended result instead they are met with multinational disdain. I intensly hate the actions of these zealous many.