Gambar Perang Saudara Syria.
A member of the notorious Shabiha is held by the scruff of his neck as he is led to his doom
The pictures emerged as the organisation Human Rights Watch released a video and report into brutal summary executions carried out by the other side - Syrian government forces
The executions took place near Syria's largest city, Aleppo, which has seen intense fighting between the rebels and Assad's forces
'The war in Syria has reached the point where a person can be mercilessly killed in front of hundreds of people - who enjoy the spectacle,' said the photographer
The picture forms part of a set taken by the photojournalist, whose identity has not been revealed in order to protect him
Anti-Assad fighters are seen here near Aleppo, in norther Syria