Weak argument not rooted in reality. The average person isn’t going to hear it and be convinced. There’s a lot to criticize MAGA over, but racism isn’t a right-wing ideology.
How is racism not right-wing?
The Right, as well as the Left can encompass many ideologies and forms and race could play a role in some ideologies. Once again not all.
For example in the 19th century Europe, Nationalism and Racism were inherently tied together. But was it " right wing " ? In today's world yes, but back then, the people opposing nationalism was extremeley conservative monarchists and the Catholic Church.
Would you call Christian Democracy a racist ideology ? Or the Liberal Conservative Strand that dnominates Europe ?