After US entry into the "Great War," great emphasis was placed on ensuring unanimous support for the war, aka"100% Americanism" How and why did this emphasis turn into suppression of ideas and people, and what were the Constitutional ramifications? Is suppression of free speech and civil liberties in general ever justified?

Me a slaveowner who worked a slave to death or be a slave to death, a. cannot be tried for murder in criminal court but could be sued for wrongful death in the civil court b. cannot be tried in court because there was no law against the mistreatment of slaves. c. could have his form or plantation confiscated by the state and sold to the highest bidder. d. could be tried for murder in most southern states.