Protesters at the Lincoln Memorial

4048 × 2703

Martin Luther King Jr. speaking at rally

2032 × 2950

Protest at the Berlin Wall

1082 × 736

Woman in Green Jacket — Dramatic, Photograph

1200 × 900

Colonial-era Protest

1003 × 605

Prohibition protest march

1440 × 902

Greek funeral procession

1638 × 1164

Boston Tea Party

1003 × 605

People on Berlin Wall

1754 × 1200

Suffragette arrest in London

1772 × 1489

People on Brandenburg Gate

3000 × 1995

Protester offers flowers to soldiers

1029 × 776