Lets leave how the movie has been taken or how the screenplay is though its awful. Just because the director has a background of gangster movies he cannot manipulate the story of a real person who actually lived.
Many facts in the film are cooked up just to show veerappan as a horrifying villain. I have grown up reading news about veerappan and knowing many facts about his life, for me this film is nothing but a absolute nonsense.
Its not just the director who knew about veerappan everyone who is above 20 years knew about him just the same way the director has known. Just the first 5 mins of the movie made me understand how horribly the movie has been made and the first scene of veerappan mutilating a police by chopping off his limbs, man seriously how come you invented some crap like this. Before taking a movie about a person at least try to know some facts about him, don't just bring your imagination on the screen.