To get over is to forget. The purpose of history is to learn from it. You will never hear anyone tell the Jews to get over their persecution under Nazi Germany. You will never hear anyone tell the Japanese to get over the bombings of Hiroshima and Nagisaki. The African slave trade was more protracted and horrendous than both tragedies. And yet were suppose to get over it.
This government has done a great job at down playing the significance of slavery. Very rarely are we given the true horrific details of it. Thus why you have whites and Negros alike often making a mockery of it. Negros don't even respect the struggle of their ancestors enough to know when their being mocked. It's incredible.