Racists come in every color, and most racists are not of the supremacist variety.
Supremacists are extremely rare worldwide, much rarer in America, and nearly all of them are Asian.
In the real world, most racists view a single race as threatening or inferior in some way, while having no issues at all with other races.
The overwhelming majority of Americans oppose illegal immigration for sensible and legitimate reasons which have nothing to do with race (national security, safety for their families, upholding the laws Congress wrote for numerous reasons crucial to our country's survival, prevention of slavery, drug smuggling, human trafficking, forced prostitution, selling of children, murder, and kidnapping).
They fully support legal immigration as designed by Congress under the important guidelines which were, again, written by Congress, and encourage these immigrants to seek citizenship and become Real Americans.
The Democrats are the party of slavery, drug smuggling, human trafficking, forced prostitution, selling of children, murder, and kidnapping.