Men are not naturally violent. There have been societies with little or no violence. Studies over the past century have found that half of the tribal societies studied had little or no violence against women, against children, or among men. Furthermore, even today, in many countries the majority of men are not physically violent. Violence is something that some men learn. Men's violence is a result of the way many men learn to express their masculinity in relationships with women, children, and other men. Many men learn to think of power as the ability to dominate and control the people and the world around them. This way of thinking makes the use of violence acceptable to many men. Most individual acts of men's violence are a pathetic attempt to assert control over women, children, or other men. Paradoxically, most violent acts by men are a sign of weakness, insecurity, and lack of self-esteem combined with a capacity for physical or verbal domination and a feeling that they should be superior and in control. Women are not immune from committing acts of violence. Women's groups have spoken out against the problem of violence against children, which is committed by both women and men, although most sexual abuse of children is by men. Women too can be violent against men or other women, but it is far less common than violence by men. In many violent incidents, men have been drinking alcohol. This might be because alcohol unleashes feelings, fears, rage, and insecurities that some men, cut off from their feelings, cannot handle. But alcohol doesn't cause violence. Genes don't cause violence. Ultimately, it is the attempts by some men to dominate women, adults' attempts to dominate children, and some men's attempts to dominate other men or groups of men. Violence is a way of asserting power, privilege, and control.