Interesting article here about, 'The Blackface Party':
Beto has been called Beto since he was a small child. They've even got photos of him as a little kid wearing a shirt with that name.
That said:
In fact, O’Rourke has never offered even the faintest suggestion that he’s a Latino. In a March interview with HBO host Bill Maher, the El Paso congressman, when asked about his heritage, said, “Pretty Irish.”
