Snapshots: the world in 24 hours, May 13

A native Paraguayan boy approaches riot police, as dozens of members of the Ache, Guarani, and Toba tribes camp in a city park to demand that the government attend to their claims to ancestral land, in Asuncion May 13, 2011. [Photo/Agencies]

A Titi Pigmeo (Cebuella Pygmaea) born in captivity ten days ago, rests on the back of its mother at the Santa Fe zoo in Medellin May 13, 2011. [Photo/Agencies]