Just months before Indonesia invaded East Timor in 1975, Indonesian special forces killed five Australian-based journalists, who would later become known as the 'Balibo Five'.
Five men - Greg Shackleton, Gary Cunningham, Tony Stewart, Malcolm Rennie and Brian Peters - were sent to East Timor to cover what was the region’s largest emergency at the time.
READ MORE
Balibo Five 40 years on
Forty years later, the men’s killers have never faced courts. In 2014, the Australian Federal Police dropped a war crimes investigation into their deaths, after saying they faced challenges due to jurisdiction.
In 2015, the killing of journalists continues in warzones, dictatorships, countries with crime problems and even some democratic advanced economies.
The Committee to Protect Journalists (CPJ) - an international organisation that keeps a database of journalists killed because of their work - says the majority of known journalist killings have been carried out with complete impunity.
In the majority of cases, not a single person is convicted. The last time all people involved in killing a journalist were convicted was in 2009 and in the years since, between 342 and 497 journalists have been killed, the CPJ says.
Often, law enforcement will be responsible for the attacks. In India this year, after police entered his home, beat him and set him alight with petrol.
Singh's son was a witness and reported the same details, but the police said Singh was a wanted man who killed himself, and was not a journalist.
The CPJ said Singh reported critically on politics in India.
This year, the worst attacks on journalists have been the Charlie Hebdo incident in France where 12 people (mostly editorial staff) died and an incident in January, when five journalists and six other people were killed.
The Charlie Hebdo office was targeted after its satirical cartoons of the Prophet Muhammad were printed.
The CPJ's database of killed journalists includes bloggers, freelancers, citizens journalists and some other editorial staff. The database lists the deaths with "motive confirmed", meaning journalists' deaths were directly related to their jobs.
Those include cases where the CPJ could identify the journalist was murdered in reprisal to their work, killed in crossfire or other dangerous situations like protests.
In the past two decades, the number of killings with motive confirmed has remained relatively flat, with 61 cases in 2014.
That death toll rises to 92 for the year when other media workers, like translators and camera operators, are included in the mix.
While the CPJ's records show political groups are the main perpetrators of killing journalists, militants and government officials also play a part.
Sometimes, the destinction between governance and crime is blurred.
In 2015, Guatemala-based journalist Danilo López was shot and killed. The editor of the where Lopez worked said the journalist received constant threats by municipal authorities for the stories he covered.
Organised crime had infiltrated local governments, Lopez said in 2014.
