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Abstract History museums and historic sites that back away from telling difficult history do a disservice to the victims of the trauma, the bearers of the historical knowledge, and the public. Staff members and visitors alike are frequently uncomfortable with broaching these subjects, yet helping people talk about difficult topics can promote a sense of relief, bonding, and affirmation. Silence and selective amnesia only perpetuate injustice.
Phillip Seitz (Sun,) studied this question.