4 decades of Canadian police homicides by the numbers

Police officers across the country handle some of the most dangerous situations in our society on a daily basis. A Statistics Canada study released in 2010 found that with the exception of taxi drivers, police are the most likely Canadians to be slain on the job.

The latest reminder of just how dangerous policing can be came Fridayin Fredericton, N.B., where officers Lawrence Robert Costello, 45, and SaraMae Helen Burns, 43, were amongfour people killed in an early-morning shooting.

• Fredericton police ID 2 officers killed in shooting in which 2 civilians also died
• Monctonshootings: 3RCMPofficers dead, 2 wounded

The Canadian Police And Peace Officers Memorial database contains a near complete accounting of all law enforcement personnel who died while on duty. CBC News analyzed these records to uncover the key trends on police fatalities since 1975.

Homicide most common cause of on-the-job deaths

Since 1975, a total of 284 police officers have died on the job. Of these, 101 were homicide victims, while 88 were killed in vehicle accidents often while rushing to respond to a call in poor road conditions.

Aircraft crashes during transportation or surveillance operations in more remote regions account for 29 deaths, and often claimed many lives in a single crash. On three occasions, officers were killed during training exercises.

Firearmsoften used to kill police

More than 83 per cent of slain police officers were killed witha firearm. In 11 cases, the assailant used a vehicle or a knife as the weapon. Overall, the number of police homicides isin decline since the 1970s.

TheStatistics Canada studyfrom2010 found that about 80 per cent of officers killed with a firearm were not wearing bulletproof vests. However, this trend has decreased significantly since the mid-1980s.

Thesame study found mostofficers were attacked by surprise only a third had the chance to draw their gun or fire a shot before their death.

Robbery calls led to most police deaths

Using cases up to 2009, Statistics Canada found robbery investigations have ledto the most police deaths, accounting for a quarter of cases. Overall, domestic calls are the second-most likely scenario in which police are murdered, but in recent years, roadside stops and suspicious people calls have increasingly lead to more fatalities.

RCMP has suffered the most losses

Nearly 30 per cent ofpolice homicide victims were members of the RCMP. In many cases, more than one officer was killed during the same event, such asin the 2014 shooting in Moncton, N.B., where three officers were murdered, and in Mayerthorpe, Alta., in 2005, where four officers were shot and killed.

A total of 28 Mounties have been killed in homicides on duty since 1975. The Montrealpolice service is nextwith 11 officer homicides, followed by the Ontario Provincial Police with 10.

In 40 per cent of homicide cases, the officer was responding to a call alone.

Homicide victims are mostly young, less-experiencedmen

Sara Mae Helen Burns, who was killed Friday in Fredericton,is only the fourth female police homicide victim since 1975.

Historically, the average age of officers killed on dutyis 34 years, with about eight years of service.

U.S police more likely to die byhomicide

Over the past decade in Canada, there has been an average of 1.8 police killed by homicide per year. Statistics Canada estimates there are about 70,000 sworn officers in the country.

In contrast, figures from the U.S. National Law Enforcement Officers Memorial Fund show there is close to one police officer killed on the job per week. The Bureau of Justice Statistics pegs the total number of sworn officers in the U.S. at more than 750,000.

Police homicides occurmost often on Fridays

Of the 101 police homicides since 1975, a quarter of them have occurred on a Friday.

Notes on methodology:

• Most records on police shootings were sourcedfrom theCanadian Police And Peace Officer's Memorial honour rolldatabase.
• In some cases, police departmentnames and jurisdictions changed slightly over time, as is the case for Montreal and Toronto. In these cases, the records were simply blended in with the current day equivalent force.