But President Andrew Johnson, who was a southern Democrat elected in 1864 on a union ticket with President Abraham Lincoln, a Republican, vetoed the 1866 Civil Rights Bill. While the Republican Party organized in the 1850s to fight the idea that there should be different classes of Americans based on race, Democrats tended to support racial discrimination. In that era, not only Black Americans, but also Irish and Chinese faced discrimination. These cultures continue to be considered less than real Americans by some Maga's. When congress ruled black men were citizens they included irish & Chinese.