40 gangsters arrested in new swoop

The men in blue has swung into action and netted another 40 gangsters following the public outcry for action. Given the right order, they can really do a good job. But 40 is too small a number to cheer about. There could be another 400 or 4000 on the loose. What else can the men in blue do to make sure that their message gets through and those still out of the net know that it is time to behave