Columbia subject headings:
Harvard subject headings:
Paraíba (Brazil : State)--Social conditions--20th century.
Political violence--Brazil--Paraíba (State)--History--20th century.
Social conflict--Brazil--Paraíba (State)--History--20th century.
Princeton subject headings:
Agricultural laborers--Violence against--Brazil--Mari (Paraíba).
Paraíba (Brazil : State)--History.
Police brutality--Brazil--Mari (Paraíba).