Continuity mistake: When the army shoots the guards around the president, before El shows up and saves him, you can see bullets blowing off pieces of the wall behind. A second later, they disappear. The damage was CGI, and wasn't animated in all the shots.

Once Upon a Time in Mexico (2003)
41 mistakes - chronological order
Directed by: Robert Rodriguez
Starring: Johnny Depp, Antonio Banderas, Willem Dafoe, Salma Hayek, Mickey Rourke, Cheech Marin, Danny Trejo, Eva Mendes, Rubén Blades, Enrique Iglesias
Left Nut: I was tortured once... I didn't like it. You know what the really fucked up part was? They tore out my left nut. That really turned me off to the whole thing.
Trivia: Danny Trejo, who played Cucuy in this film, is director's Robert Rodriguez's cousin. This might be why Trejo is in almost every film Rodriguez has made.
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Chosen answer: They would need to be touching the ground so the electrical current could complete the circuit.
raywest ★