Photographer Eros Hoagland captures disturbing images of a war between the police and powerful drug gangs in Rio de Janeiro.

Witness

French photojournalist Veronique de Viguerie travels the South Sudan with a militia of farmers who took up arms to protect themselves against Joseph Kony's Lord's Resistance Army.

South Sudan

Photojournalist Michael Christopher Brown is injured while taking pictures in Libya.

Libya

Photojournalist Eros Hoagland captures images in Juarez, Mexico where drug-related violence is prevalent.

Juarez

Contemporary photojournalists observe violence and social disorder as they document events in conflict zones including Rio, South Sudan, Libya and Juarez.

S1 E1 | Juarez

E4 | Rio

E3 | South Sudan

E2 | Libya

E1 | Juarez