Demonstrators protest in the celebration of May Day in Colombia

01/12

Caption

A group of demonstrators protest in the celebration of May 1, International Day of the Work, treading on the flag of The United States, in Medellin, Colombia on May 1, 2012. In Medellín, Colombia. 10/05/2012. Photo by Fredy Amariles/VIEWpress.

02/12

Caption

A woman wears a mask a holds a flag on May Day.

03/12

Caption

A woman wears a mask a holds a flag on May Day while stepping on the US flag.

04/12

Caption

A group of demonstrators protest in the celebration of May 1, International Day of the Work, Doing obscene gestures and treading on the flag of The United States, in Medellin, Colombia on May 1, 2012. In Medellín, Colombia. 10/05/2012. Photo by Fredy.

05/12

Caption

Demonstrators hold a banner showing communist leaders while stepping on the US flag.

06/12

Caption

A group of demonstrators protest in the celebration of May 1, International Day of the Work, carrying a cartel with the figures of the Che Guevara and of Fidel Castro with a legend that he says " For the Latin-American integration ", treading on the.

07/12

Caption

A protester climbs a building and kicks a security camera.

08/12

Caption

Protesters run from riot police.

09/12

Caption

A protester throws a tear gas canister at riot police.

10/12

Caption

Protesters chase riot police.

11/12

Caption

Protesters chase riot police and throw rocks at them.

12/12

Caption

A protester wears a birdcage over his head.

Report current story

A group of demonstrators protest in the celebration of May Day while treading on the flag of the United States, in Medellin, Colombia. Labour Day is an annual holiday to celebrate the economic and social achievements of workers.