"The name code talkers is strongly associated with bilingual Navajo speakers specially recruited during World War II by the US Marine Corps to serve in their standard communications units of the Pacific theater. Code talking, however, was pioneered by the Cherokee and Choctaw peoples during World War I.
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They sent and received verbally encrypted messages over radio to and from the battlefield during World War 1.
Slaves did not experience things politically, socially or economically because they were slaves, who couldn't vote, leave their owners or have a real job.
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FBI, Border Patrol, CIA, Homeland Security
The one that is incorrect is this one: The massacre began because of a violent outburst by protesters towards passerby that supported the current government. Simply opposing the regime was a crime in their eyes, and thus the massacre happened.