I agree with Jim.
Resentments lead to violence, either in words or actions. And they devour a person or a group from within.
That's why Martin Luther King Jr. and Gandhi advocated nonresistance to further their cause of social injustice.
In Gandhi's words, "My nonresistance is active resistance in a different plane. Nonresistance to evil does not mean absence of any resistance whatsoever but it means not resisting evil with evil but with good. Resistance, therefore, is transferred to a higher and absolutely effective plane."
The same is true with the Dali Lama and his cause for Tibet.