'Inspector Javert' in Victor Hugo's great story

In Hugo's Les Miserables, a convicted thief ''Jean Valjean' @ '24601 is a good person but the cop 'Inspector Javert', a bad guy. 'Why ? ''What was the message of Hugo in his very well'-'remembered masterwork ? Les Miserables was first published in French in Brussel 150 years ago. Now, 'Les Miserables is available or accessible not only in English and Chinese but also many other major languages on earth, 'east or west. One of the most memorable musical performances of 'Les 'Miserables in the Englisah-language sphere is presented by Cameron Mackintosh.