How? Because those young Mexicans are tourists and the voice talking to them is a man playing the role of an anti-immigration officer as part of a Night Walk experience offered by EcoAlberto theme park four hundred miles south of the actual US-Mexico border.
Cirilo Jerónimo, the man playing officer, landed his job at the park after getting caught crossing the border into the US.
"I try to act based on what I saw the Border Patrol doing when I was crossing the line," he said.
With many of its population having immigrated to the US, El Alberto was becoming a ghost town in 2004, up until local entrepreneurs created EcoAlberto, used for kayaking and mountaineering during the day and for illegal immigrant simulations at night.
Participants pay 250 pesos ($16 US) to play migrants sneaking across rough terrain, trying to evade border guards, thieves and dangerous drug traffickers, reported the Telegraph.
Organizers say, the drill is to raise awareness of the perils of immigration, including being caught by the "migra" or fall prey to criminals.
According to Pew’s analysis of Border Patrol statistics, 229,000 Mexicans were apprehended by Border Patrol in 2014, while 257,000 non-Mexicans were nabbed.
The US government recorded 307 deaths among illegal immigrants in the 12 months to September 2014, down on previous years.