It's the MAGA wing of the Republican Party demanding whatever nonsense their deranged cult leader tells them.

“When Mexico sends its people, they’re not sending their best. They’re not sending you. They’re not sending you. They’re sending people that have lots of problems, and they’re bringing those problems with us. They’re bringing drugs. They’re bringing crime. They’re rapists. And some, I assume, are good people,”

That crap works because his uneducated cult followers don't know how to do the research. Afterall if they believe there was massive election fraud with no proof, they'll believe anything.