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The stark pictures, characterized by stylized realism and deep blacks, include “Giddap,” a powerful depiction of the moment a Black man is lynched.

The man who was driving them cracked his whip and shouted, “Giddap there, John! No use trying to shirk!”

Then she climbed up on the seat, said, “Giddap,” slapped Dollie with the reins and they were off.

Woodruff titled the piece “Giddap.”

Calmly crossing them underneath his body, she gave his tail a smart jerk, accompanied by the shrill command, “Giddap!”