There is no direct link between the number of police officers in post and the number of crimes committed. If this were the case, police numbers would have been slashed from those in post in 1996 rather than having remained fairly constant; the UK crime rate has plummeted mostly because the age cohort of the population most likely to commit crime has grown up.
Now the crime rate is starting to rise again, the knee jerk call is for more police. But wait. Think. What have all those police - whose numbers have hardly changed, remember - been doing since 1996, when there haven't been enough burglars, car thieves or muggers to keep them busy? Isn't it obvious? They've all been sitting at the station watching porn on their computers and patrolling Facebook and Twitter for people being rude.
During the working day, Twitter used to be the preserve of unemployed people in their underpants. Now you can't move for tweets from plods, bored out of their skulls looking for racists. Well, their time has come. The British criminal has come to their rescue. They can now lever themselves out of their rotating chairs and bloody well get back out on the beat.