Columbia subject headings:
Christian martyrs--Biography.
Persecution--History--20th century.
Harvard subject headings:
Christian martyrs--History--20th century.
Human rights--Religious aspects--Christianity
Martyrdom--History--20th century.
Martyrs--History--20th century.
Persecution--History--20th century.
Princeton subject headings:
Christian martyrs--Biography.
Persecution--History--20th century.