In 1703 The revenge of the forty-seven rōnin (also known as the Akō incident) in which a band of rōnin avenged the death of their master. In Edo (now Tokyo), all but one of the Forty-seven Ronin committed seppuku (ritual suicide) as recompense for avenging their master’s death.

Above, Kunisada, Chushingura Act XI – The Night Attack, a 19th century depiction of a dramatic reenactment of the incident.

Also: Dietrich Bonhoeffer and Rosa Parks