A 5-year-old boy rests by the roadside with his mother as thousands of fellow migrants trudge past. A woman grips her two young daughters as they flee a cloud of tear gas. A child slithers under a fence to reach U.S. soil. A man sobs in a U.S. border patrol vehicle as his dreams of a new life are dashed.

These are the faces of migrants whose trek from Central America to the United States has transfixed the continent since mid-October.

As they drew closer to the U.S. border with Mexico, the thousands of mostly Honduran migrants became a symbol of U.S. President Donald Trump's tough policies on immigration.