Cheryl Buswell-Robinson, widow of civil rights activist Ray Robinson who disappeared from Wounded Knee in 1973, stands outside her Sioux Falls, S.D., hotel after arriving for a weekend conference commemorating 40 years since the takeover of the South Dakota reservation village, Thursday, April 26, 2012. Buswell-Robinson is hoping to get some answers about where her husband's body is buried. (AP Photo/Dirk Lammers)

Associated Press
Cheryl Buswell-Robinson, widow of civil rights activist Ray Robinson who disappeared from Wounded Knee in 1973, stands outside her Sioux Falls, S.D., hotel after arriving for a weekend conference commemorating 40 years since the takeover of the South Dakota reservation village, Thursday, April 26, 2012. Buswell-Robinson is hoping to get some answers about where her husband's body is buried. (AP Photo/Dirk Lammers)
Cheryl Buswell-Robinson, widow of civil rights activist Ray Robinson who disappeared from Wounded Knee in 1973, stands outside her Sioux Falls, S.D., hotel after arriving for a weekend conference commemorating 40 years since the takeover of the South Dakota reservation village, Thursday, April 26, 2012. Buswell-Robinson is hoping to get some answers about where her husband's body is buried. (AP Photo/Dirk Lammers)
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