For example, one will virtually never hear that the Palmer Raids, Prohibition, or American eugenics were thoroughly progressive phenomena. These are sins America itself must atone for. Meanwhile, real or alleged “conservative” misdeeds — say McCarthyism — are always the exclusive fault of conservatives and a sign of the policies they would repeat if given power. The only culpable mistake that liberals make is failing to fight “hard enough” for their principles. Liberals are never responsible for historic misdeeds because they feel no compulsion to defend the inherent goodness of America. Conservatives, meanwhile, not only take the blame for events not of their own making that they often worked the most assiduously against, but find themselves defending liberal misdeeds in order to defend America herself. -- Jonah Goldberg
1) The Trail of Tears (1838): The first Democrat President, Andrew Jackson and his successor Martin Van Buren, herded Indians into camps, tormented them, burned and pillaged their homes and forced them to relocate with minimal supplies. Thousands died along the way.
2) Democrats Cause The Civil War (1860): The pro-slavery faction of the Democrat Party responded to Abraham Lincoln's election by seceding, which led to the Civil War.
3) Formation of the KKK (1865): Along with 5 other Confederate veterans, Democrat Nathan Bedford Forrest created the KKK.
4) 300 Black Americans Murdered (1868): "Democrats in Opelousas, Louisiana killed nearly 300 blacks who tried to foil an assault on a Republican newspaper editor."
5) The American Protective League and The Palmer Raids (1919-1921): Under the leadership of Woodrow Wilson, criticizing the government became a crime and a fascist organization, the American Protective League was formed to spy on and even arrest fellow Americans for being insufficiently loyal to the government. More than 100,000 Americans were arrested, with less than 1% of them ever being found guilty of any kind of crime.
6) Democrats Successfully Stop Republicans From Making Lynching A Federal Crime (1922): "The U.S. House adopted Rep. Leonidas Dyer’s (R., Mo.) bill making lynching a federal crime. Filibustering Senate Democrats killed the measure."