The stranger looked like any of the thousands of peasants who flocked into the city from the countryside searching for work. He wore frayed tan pants and a simple cotton shirt. His sandals were soled with the tread of a truck tire. On his head he wore a hat made from woven palm leaves. No one paid him any attention as he moved slowly up the hill, weaving between heaps of trash and kids roughhousing in the streets.

Finally, two young men with slicked-back hair and predatory eyes lifted themselves from the five-gallon buckets they were using as stools. One adjusted his shirt so the taped butt of an ancient revolver was visible. His partner hefted a baseball bat.

They approached the stranger and called out, “What’s your business here?”

They could see the man was in his sixties and had a dim look in his eyes. He muttered a response that neither man understood.

“I think you should head back down the mountain, old man,” the leader of the two thugs suggested. “There is nothing but trouble for you here.”

It was obvious the old man had nothing of value, so there was no sense robbing him, and letting him linger would mean one more beggar clogging the streets. Better to send him packing now than disposing of his corpse later when he died of starvation or dysentery.

“I want no trouble,” the man said in Spanish.

“He ain’t even Brazilian, man,” the young thug complained. “We can’t feed ourselves, and some Bolivian expects to live off our charity.”

The kid with the gun spat angrily. “Not your lucky day, pal.”

He grabbed the old man by the arm while his partner got him by the other, and they quickly marshaled him into a tight alley between two shipping containers that served as homes for dozens. A cat had been sunning itself on a tire pile at the entrance of the alley, but its primal sense of trouble sent it fleeing. The ground was oil soaked and packed as hard as cement.

They tossed the man into the side of one of the containers, but he turned so that he hit it with his back and not his face as they had intended. If either street tough realized how deftly the old man had moved, things might have ended differently. The space was too narrow to swing the bat properly, so the thug used its butt end like a ram aimed at the old man’s stomach. He wasn’t a big kid, and perpetual hunger did little to give him superior strength, but the blow would be enough to drop the old man to the ground with his lungs emptied of air.