How can you, from where ever you are right now, help stop brutal acts of violence? Stay aware of all the GOOD that is happening in the world. Consume "healthy" news. Just how eating well keeps you energized and feeling good, "reading well" keeps you energized and feeling hopeful. When you feel hopeful, you'll do better work in your own life. When you do better work in your own life, you inspire others to do the same.
Good news here.