You may want to reread the story. The use of the N word was a vague reference many decades ago and had nothing to do with the original designation of the rock as a memorial.

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To argue with a person who has renounced the use of reason is like administering medicine to the dead - Thomas Paine

A lie doesn't become truth, a wrong doesn't become right, and Evil doesn't become good, just because it is accepted by the majority. - Booker T Washington