Emmett Till's black, broken body was plucked from the Tallahatchie River in Mississippi days after his killing in August 1955, a heavy cotton gin fan tied on his neck with barbed wire. It took 19 days for two white men, Roy Bryant and his brother-in-law J.W. Milam, to be acquitted of murder by an all-white jury. Then it took 52 years for historical markers to be erected at locations related to the teenager's death, which galvanized the civil rights movement after the acquittal. And now, at the spot marking where Till's body was pulled from the river, it took just 35 days since installation for a replacement sign to be pierced by gunfire. Again. Till was lynched, shot and tortured before his death, and a grim trail of his final moments is marked by signs installed by the Emmett Till Interpretive Center, a museum supported by Tallahatchie County. But the sign - the third iteration after the first was stolen and the second was destroyed by gunfire - apparently was pierced by four bullets ... five weeks after it was dedicated, center co-founder Patrick Weems said. The marker has drawn visitors to the site outside Glendora, Miss., the final stop on a civil rights movement driving tour across the Mississippi Delta. It has also become a beacon for racist expressions of violence, and a signal that work toward justice and equality remains unfinished.