Central American migrants trek north to seek a better life Checkpoint in Guatemala

Reuters photographer Ueslei Marcelino: "The migrants had already broken through the first police barricade on the Guatemalan side of the bridge. After a while, they moved towards the second barricade on the Mexican side. The push by the migrants to enter Mexico had eased and suddenly women and children formed a line and started to walk towards the police. There was a bit of pushing and shoving, and then things started to get increasingly chaotic. It was a march that turned into a protest and ended up in confusion. Of course, it affected me. I'm also a father of a nine-year-old girl. It was impossible not to think about being that father caught up in that panicked situation. After taking the photo, I took others of families coming out of the restrictive cordon created by police. The confusion was brought under control after gas was used to disperse them, and the migrants were pushed back to the Guatemalan side."

Reuters