This photograph was taken by a british agency on March 20th 2008.

it shows chinese soldiers, as they dressed as fake "monks", to commit acts of violence in Tibet's city of Lhasa.

Wikipedia: "An agent provocateur is often a police officer who encourages suspects to carry out a crime under conditions where evidence can be obtained; or who suggests the commission of a crime to another, in hopes he will go along with the suggestion, so he may be convicted of the crime. These are sometimes called sting operations."