What was the main reason americans were upset by the palmer raids of 1919 and 1920? a-the raids ignored people’s civil liberties. b-the raids protected the civil liberties of immigrants. c-the raids focused on labor organizations. d-the raids protected citizens from radical groups.

The answer would be A: The raids ignored people's civil liberties. 

Occurring during the height of the Red Scare, the Palmer Raids were conducted in an attempt to find and arrest communists, radical leftists, etc. After a while, Americans started to become upset at these raids as many were arrested and detained without warrants, a violation of the people's civil liberties.