Last year, protesters against racial injustice toppled numerous statues around the country. Now, one of the first works of art to emerge in their place depicts an unsung hero of the Lewis and Clark expedition. A huge bust of York, a Black man who was enslaved by William Clark and who was the first African-American to cross the continent and reach the Pacific Ocean, is sitting atop a pedestal amid a lushly forested park in Portland, Oregon. It was placed there in the dead of night last weekend by persons unknown. People have flocked to the bust and it has raised awareness about York’s life.