21.   Armed robbery, crack cocaine and violence define much of his life.

22.   Arthur told the police that Levin paged him and asked him to bring crack cocaine.

23.   At the hearing, prosecutors accused Ms. Davila of scratching her daughter with her fingernails and smoking crack cocaine in front of her.

24.   At one point in the investigation, a federal affidavit says, Levin was observed cooking up crack cocaine in his kitchen.

25.   At this raid of an apartment building by a Harlem narcotics team, led by a white sergeant and lieutenant, crack cocaine was found.

26.   Authorities said both men were high on crack cocaine at the time of the robbery and killings.

27.   Authorities call the effects of toluene abuse as bad or worse than crack cocaine, but criminal penalties are not nearly as severe.

28.   Because crack cocaine is more prevalent in minority neighborhoods, that law results in a disproportionate imprisonment of blacks.

29.   Before methamphetamines and crack cocaine.

30.   Both men resigned from the committee when the experiments, which involved administering crack cocaine to monkeys, were allowed to continue.