Man (and Woman) are genetically aggressive apes. Not a slur, that's simply what we are.
And though people of good will and should continue to try to resolve conflicts, it does no good to ignore this facet of our primitive nature.
Sometimes words do not work, and only time--sometimes a LONG time-- can dampen the fires of hatred and injustice.

As a Canadian of Irish extraction, I feel this keenly. I would not be here except for the brutal results of famine in Ireland in the 19th century. And still the Irish conflict continues....