Jehovah's Witnesses try to live by the words of Jesus at John 13:34,35 which indicate that his true followers would be identified by their love for one another. This is one reason they do not take up arms or go to war.
Woman: "I don't like Jehovah's Witnesses because they refuse to join the military and fight for the freedoms they enjoy everyday. My son went to war and gave his life for his country."
Jehovah's Witness: "I'm sorry to hear about the loss of your son. But one thing you can be assured of, he didn't lose his life at the hands of one of Jehovah's Witnesses"