![Ethiopian Emperor Haile Selassie waves to crowds lining Pennsylvania Avenue.](/sites/default/files/styles/large/public/article18-19/Haile%20Selassie.jpg?itok=2i3T_j5q)
Emperor Haile Selassie
![British leaflet promoting a 1935 lecture by Pan-African leaders.](/sites/default/files/styles/large/public/article18-19/Ethiopian%20Support_0.jpg?itok=6XXssi8s)
Ethiopian Support
![Cotton, wool, and warm blankets intended for the war front.](/sites/default/files/styles/large/public/article18-19/Ethiopia%201935.jpg?itok=kU9_qRO0)
Ethiopia 1935
![President Bill Clinton visiting Hanoi in 2000.](/sites/default/files/styles/large/public/article18-19/Clinton%20in%20Vietnam.png?itok=ZvICyKTR)
Clinton in Vietnam
![British Anti-Apartheid Movement flyer announcing a demonstration in Trafalgar Square.](/sites/default/files/styles/large/public/article18-19/Anti-Apartheid.jpg?itok=yFADh7a_)
Anti-Apartheid
![A 1976 poster reads, 'Independence for Zimbabwe. Condemn the white minority government of Rhodesia!'](/sites/default/files/styles/large/public/article18-19/Rhodesia%20Poster.jpg?itok=IaXxvJj2)
Rhodesia Poster
![Barbara Walters interviewed President Jimmy Carter on December 28, 1977.](/sites/default/files/styles/large/public/article18-19/Barbara%20Walters.gif?itok=y8v4sgzw)
Barbara Walters Interview
![President Donald Trump’s August 2019 tweet about the International Economic Emergency Powers Act.](/sites/default/files/styles/large/public/article18-19/Trump%20Tweet.png?itok=JqhKWmJS)
Trump's IEEPA Tweet
![A 1976 poster that reads 'Condemn the South African apartheid regime and support the international boycott.'](/sites/default/files/styles/large/public/article18-19/South%20African%20Boycott.jpg?itok=RnOTrdpd)
South African Boycott
![Executive Order 13224 on the left and Specially Designated Nationals list on the right.](/sites/default/files/styles/large/public/article18-19/Treasury%20Sanctions2_0.jpg?itok=XGT-CFD5)
Treasury Sanctions
![Nicaraguan Protester.](/sites/default/files/styles/large/public/article18-19/Nicaraguan%20Protester.jpg?itok=FVGGXSHQ)
Nicaraguan Protester
![Europe's Optical Illusion by Norman Angell.](/sites/default/files/styles/large/public/article18-19/Europe%27s%20Optical%20Illusion_1.png?itok=CAXl7GwM)
Europe's Optical Illusion