My friend dined recently at a posh restaurant in Zacatecas. He and his party had been seated where they could observe patrons getting out of their cars and handing their keys to the valet parking attendants.
Four identical black SUVs pulled up. A dozen young men got out, sidearms visible under their jackets, and entered the restaurant.
One of them addressed the roomful of diners. "Please do not be frightened. We are just coming in for a meal. We ask you to remain in the restaurant until we leave. No one else is allowed to come in until we are finished. Please, nobody use your cell phones. You can relax and enjoy yourselves as our guests."
Then a smaller group of somewhat older men entered, flanked by bodyguards. They spent a couple of hours quietly eating and drinking. As they left, the spokesman handed a thick wad of cash to the restaurant owner. He announced, " Thank you for your cooperation. I hope everyone enjoyed comida. You can go whenever you want." He left, and the motorcade pulled away.