I'm guessing the OP is a young kid who hasn't studied much history. I can't imagine that he is an adult or has had much formal education. But let me just say...
Both parties have been more or less racist as their electoral coalitions have shifted.
Surely, the OP should know about the candidacy of KKK man David Duke - one of the nation's leading white supremacists. Please recall his 1996 Senate bid when he campaigned on "saving the white heritage". He claimed that blacks were a disease on the social body, destroying it with crime and atavistic behavior. He described their higher incarceration rate not as the Left did (structural injustice/ institutional racism) but because blacks were more genetically inclined to crime.
David Duke ran purely on a platform of far right populism - anti-immigrant, anti-gay, anti affirmative action, anti-welfare, anti-abortion, anti tolerance of outside, non-white groups . . . all of which, Duke claimed, were destroying the organic and sacred social fabric of our white christian nation.
David Duke, the John Birch Society, Holocaust Deniers, etc., etc. There is a small but very real network of Rightwing extremist groups who are agitated by Talk Radio to believe that their country is under siege by outsiders. We've seen this before. It is a very common strategy on the Right. Hitler told Germany that the country was under assault from Jews. Specifically, Hitler claimed that the over-tolerant Weimar liberals had allowed Jews to rise to positions of power inside banking, entertainment and politics. He said the Jewish Christ-Killers were threatening Germany's "Borders, Language, and Culture" with their corrupt anti-Christian ways. He was the original Talk Radio genius.
Throughout history extremist groups have taken over nations using Rightwing populism, which scares the downtrodden & stupid with tales of external demons who are secretly destroying the sacred fabric of society. They use race, religion and wedge issues to distract the serfs while they loot the treasury.