Title: In the line of duty: How often are US police killed? - BBC News
Headings: In the line of duty: How often are US police killed?
In the line of duty: How often are US police killed?
How often are police killed?
Why does it fluctuate?
How do police prepare themselves?

Content: "You have to look at longer term trends," Mr Stoughton says. " At best, comparing two years of information is useless and at worst, it's misleading." Live updates
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Can white and black Americans live together? The number of police fatalities in the US is a lot higher than the UK. The average number killed annually since World War Two is between three and four, according to the Police Roll of Honour, although this figure excludes those killed during the Troubles in Northern Ireland. Why does it fluctuate? While police officer deaths have been more frequent in recent years, they are still rare, Mr Stoughton adds. FBI data shows that the average number of officers killed feloniously (not accidental or due to a medical emergency) is on an overall downward trend.