CRIMINALS AND THE FBI, POLICE AND GOVERMENT

I have a question, how come the police, FBI, and the government cant find scammers, criminals, pedifiles, missing children, Bin Laden, ect. and the news reporters can? It seem that the government agencies dont follow through with making sure criminals are procecuted. Actually the government agencies usually leave it up to the criminials once prosecuted to be responsible for making sure they dont violate probation and if they do violate probation, the government just expects that these people will screw up again and get caught. It usally takes a directly involved individual to get justice. Our justice system is set up for criminals to get away with murder, rape, and abuse of process. I am very curious about this since our government is suppose to be for our SAFETY, HEALTH AND WELFARE! Well for all you skeptics, 'Thank Goodness for TV, at least its good for something!!