MIT Visualizing Cultures

In May and June of 1960 Japan was rocked by some of the largest protests in its history. They erupted over the passage of a revised security treaty between Japan and the United States, titled the Treaty of Mutual Cooperation and Security (Sōgo Kyōryoku Oyobi Anzen Hoshō Jōyaku), and have become known as the "Anpo" protests from the Japanese shorthand for that treaty.