the U.S. Department of Justice men attacked African-Americans , authorities say . one such assault involved a slingshot , ball bearings , according to prosecutors . In one case , Dominick was part of a group that used a slingshot to hurl metal ball bearings at several African-Americans , a statement from the U.S. Department of Justice said . Joseph Dominick , Thursday , pleaded guilty 21 to one charge of conspiracy .
the U.S. Department of Justice men attacked African-Americans , authorities say . one such assault involved a slingshot , ball bearings , according to prosecutors . Joseph Dominick , Thursday , pleaded guilty 21 to one charge of conspiracy .