In any case, since we are on the subject of lynching photographs, Moyers has an excellent site posted November 23, 2007, which recaps some of the research and commentatory on lynching, as well as providing an excellent visual display of some lynching images with annotation at www.pbs.org/moyers/journal11232007/profile2.html.
This summation includes a series of photographs compiled by Ken Gonzales-Day, including lynchings of Native Americans, Chinese and Latinos, Emmett Till and his mother, as well as an overview including the keeping of lynching statistics at the Tuskeegee Institute from 1882-1968 and the anti-lynching crusade of Ida B. Wells-Barnett.
Apparently, in 2005, Congress formally apologized for failing to act on some 200 anti-lynching bills. The resolution states that the Senate "expresses the deepest sympathies and solemn regrets of the Senate to the descendants of the victims of lynching, the ancestors of whom were deprived of life, human dignity and the Constitutional protections accorded all citizens of the United States."