A prominent Yonkers gang member has been sentenced to 30 years in prison after pleading guilty to murder, racketeering and narcotics charges earlier this year. Da'Quan Johnson, 25, a member of the GMF street gang, was sentenced on Friday in White Plains federal court to three decades in prison for his role in a racketeering conspiracy and for conspiring to murder rival gang members which resulted in the death of Tyrone Arthur.