"The problem with the use of violent confrontation strategies is that they quickly escalate to the point where the parties' only concerns are victory, vengeance, and self-defense. In these cases, the moral arguments of people who are being unjustly treated become irrelevant. What matters is that they have used violent strategies and their opponent is, therefore, justified in a violent response. This problem is complicated by the fact that both sides are usually able to argue that the other side started the violence...."http://www.colorado.edu/conflict/peace/treatment/nonviolc.htm
"Martin Luther King sums it up: "In any non-violent campaign there are four basic steps: collection of the facts to determine whether injustices exist; negotiation; self-purification; and direct action. People often ask, 'Isn't negotiation a better path than direct action?' The purpose of direct action is to facilitate negotiation."
An extract from a letter from Birmingham Gaol, April 1963.