Manila (Philippines), Aug 2 (EFE/EPA).- (Camera: Rolex dela Pena). The escalation in deadly violence against peasants, land-rights advocates and activists has sent shock-waves in the Philippine island of Negros where 16 civilians have been killed since last week amid the president's threat to impose martial law in a bid to stop the onslaught.  
Keywords: efe,epa,philippines,negros,island,killings