This admittedly is arm chair psycholanalysis, but maybe one reason the Democratic Party and its allies strain so hard to slander Republicans as racists is that the Democratic Party has never really admitted its own well-documented racist heritage for 100 years.
Starting with Sen. Stephen A. Douglas (D-IL) and his bill to expand slavery west of the Mississippi River in 1854 up to the time that former Ku Klux Klan Kleagle Sen. Robert Byrd (D-West Va.) served as the Majority Leader of the U.S. Senate from 1987 to 1989, racism was a integral part of the Democratic Party in many parts of the country and not just the South.
My high school history teachers loved to portray President Woodrow Wilson as a progressive because he supported the League of Nations but they never bothered to point out that he was also a visceral racist who brought back segregaton in the Civil Service after it was undone by his GOP predecessors William McKinley and Teddy Roosevelt. Wilson also hosted the premier of the racist movie "Birth of a Nation" at the White House in 1915 because it was written by one of his college pals. The silent movie celebrates the rise of the Klan in American history.
Franklin D. Roosevelt appointed Klan member Hugo Black to the U.S. Supreme Court and did almost nothing to raise awareness of Nazi murders of Jews even though he knew about them and FDR approved the inprisonment of American citizens of Japanese heritage. How exactly do these racist deeds match the "progressive" fantasy of the Democratic Party? Hundreds of Klan members served as Democratic office holders from the 1880s to the 1980s.
But the Democrats have the 14-Karat chutzpah to slander Republicans as "racist" simply because Republicans want to see government-issued picture ID cards used to reduce massive voter fraud. National Democrats claim there is no problem with voter fraud in America. Tell that to people who were intimidated at the polls in Philadelphia by Black Panthers or tell that to the North Carolina Board of Elections that recently found 155, 000 voters registered in North Carolina who were also registered under the same full name and date of birth in one of 28 other states when they ran a national database comparison. That is plenty of voters to tip the results from one party to another in a statewide election.
Many historians believe it was significant vote fraud in Cook County and in Texas that helped secure enough electoral votes for the victory of the Kennedy-Johnson ticket in 1960 and yet we are still told that vote fraud is not a problem.