Because policing in America has become a hot topic, anything related is more likely to be published, including of violence against police. But it's only a perceived trend, not a real one:
We’re continuing to see stories alleging that police work is gettingincreasingly dangerous. I suspect we’ll see even more of this as the search foraccused Pennsylvania cop killer Eric Frein continues, and then again as the year winds down. December usually brings a slew of stories about police officers killed over the last 12 months, and this year, unfortunately, we’ll see an increase in that figure over last year.
But as I’ve written at length (and generally in vain), it’s important to include context when reporting these figures. Policing has been getting safer for 20 years. In terms of raw number of deaths, 2013 was the safest year for cops since World War II. If we look at the rate of deaths, 2013 was the safest year for police in well over a century. At the current pace, we can expect to see a 17 percent increase in on the job law enforcement fatalities this year over last year. That would put the total number of police officers who die on the job this year at 117, making 2014 the second safest year for cops in terms of raw fatalities since 1959. It would also put 2014 as the safest year for fatality rates in over a century. You’re more likely to be murdered simply by living in about half of the largest cities in America than you are while working as a police officer.