anti-American protests over the sovereignty of the Panama ๐Ÿ‡ต๐Ÿ‡ฆ Canal Zone

On January 9, 1964, during anti-American protests over the sovereignty of the Panama Canal Zone, US Army units became involved in suppressing the protests in Panama, resulting in the death of 22 protesters.

https://en.wikipedia.org/wiki/Martyrs%27_Day_(Panama)