From The New York Times -
Who Is Searched, and Who Has Contraband
In four states that best track stops, blacks were more likely to be searched with their consent than whites, even though the police found contraband less often.
The chance black drivers or their cars were searched,
compared with white drivers.
POLICE AGENCIES
5.0x
Torrington, Conn.
2.9
New Haven
2.6
Conn. State Police
5.2
Equally likely for blacks and whites
Chicago
2.7
Springfield, Ill.
2.4
Hoffman Estates, Ill.
2.1
Illinois State Police
2.0
Aurora, Ill.
2.8
Charlotte-Mecklenburg, N.C.
2.7
Raleigh, N.C.
2.2
Greensboro, N.C.
1.6
Fayetteville, N.C.
1.5
N.C. State Highway Patrol
2.5
Rhode Island State Police
The chance black drivers who were searched had contraband,
compared with white drivers.
0.8x
Torrington, Conn.
0.6
New Haven
0.7
Conn. State Police
Equally likely
0.7
Chicago
0.7
Springfield, Ill.
0.9
Hoffman Estates, Ill.
1.0
Illinois State Police
0.8
Aurora, Ill.
0.7
Charlotte-Mecklenburg, N.C.
0.9
Raleigh, N.C.
0.8
Greensboro, N.C.
0.9
Fayetteville, N.C.
0.8
N.C. State Highway Patrol
1.7
Rhode Island State Police
Of these jurisdictions, only the Rhode Island State Police found
contraband more often among blacks.