Fortunately we don't have to rely on the ramblings of villagers with camcorders, because we have the testimony of police officer Gerardo Garza, who gives this reasoned account: "I saw a person dressed in black with huge claws". Right. His colleague Leonardo Samaniego adds that "she was dressed in black with huge eyes and dark skin". Although that probably describes about half the women in Mexico.
All of this is pooh-poohed by the experts of course, who wouldn't be so stupid as to think it's a witch. The one on the video has a far more reasonable explanation: "I'm inclined to say that this is an extra-terrestrial entity, and this extra-terrestrial being rides a personal vehicle of sorts, or a flying apparatus".
Yes. Or alternatively it could just be a bloke on a WASP...
According to Wikipedia, the WASP was nicknamed 'The Flying Pulpit'. So I know what to get Dave for his birthday now.