What is the main reason americans were upset by the palmer raids of 1919 and 1920

The main reason Americans were upset by the palmer raids of 1919 and 1920 was that these raids ignored people's civil rights.

These raids, also known as Palmer Red Raids, took place after WWI with the social unrest of the Red Scare. These were led by Attorney General Palmer and attempted to arrest foreign anarchists, communists, and leftists, and then proceeding to their deportation.

The American Civil Liberties Union documented unlawful practices in arresting suspected radicals during this era.

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