Other
African Americans
2
Civil rights
2
Local transit
Pickets
Athletes
1
Commuters
1
Employment
1
Judicial proceedings
1
Labor unions
1
Machinery
1
Music ensembles
1
Passengers
1
Picnicking
1
Power plants
1
Race discrimination
1
Railroad employees
1
Railroad stations
1
Railroad tracks
1
Salvage
1
Street railroad strikes
1
Women
1