My coworker, a maintenance worker, fell through the roof and died last year and I believe his maintenance job is much more dangerous than police work. Of course, no body except his relatives and my coworkers know about this.
Here is the list of the jobs that are more dangerous than police:
pilots, truck and bus drivers, captains, crane operators, sailors, construction laborers, carpenters, roofers, operating engineers, iron and steel workers, farmers and ranchers, construction managers, executives, retail sales, cashiers, sales representatives, door-to-door sales, real estate workers, telecommunications installers, mechanics, computer repairers….
Source: http://www.forbes.com/2008/08/25/dangerous-jobs-fishing-lead-careers-cx_mk_0825danger.html
