Single event?

Trail of tears? Democrats driving

Indian removal act? Democrats driving

Open rebellion against the constitution to keep slaves? Democrats driving

Black codes? Democrats driving

Birth of Jim Crow? Democrats driving

Created the KKK? Democrats driving

Showed KKK propaganda in the White House? Democrats driving

Tried to filibuster the civil rights act? Democrats driving

Imprisoned Japanese Americans unconstitutionally? Democrats driving

minimum wage laws to keep blacks from working? Democrats driving

Terrorized blacks through “vigilante Justice” (kkk actions)? Democrats driving

Championed abortion so that blacks wouldn’t have more babies and get rid of the undesirable races? Democrats driving

Complimented Hitler’s work? Democrats driving

I lost count but I think that is more than a single event.