Practicing meditation, we inevitably encounter the wandering mind. Rather than considering this experience to be a "problem", if we explore this phenomenon with mindfulness, we can learn a lot about our minds.
The mindstates behind violence--anger and fear--are universal and natural. If they possess us and drive our actions, we suffer. If we learn to meet them with a mindful awareness--if we step out of judgment and angry reactivity--we serve our own freedom and the possibility of peace on earth as well.