sarah graves , 22 , and shelbie richards , 21 , pleaded guilty to conspiring to commit the 2011 hate crime - graves got five years , richards received eight .
the women were among 10 white teens who left a party in rankin county to find black men to assault in jackson , which they called ` jafrica '
both women were in deryl dedmon 's truck when he fatally ran over james craig anderson , 47 , in june 2011 .