This movie's lesson for me was: [SPOILER]
LEAVE THE GOVERNMENT ALONE!!!
Danny Ciello, actually Bob Luci (sp?), tried to do the right thing and he went to the Government to make amends for his wrong doings and to try to make the world a better place. The Government almost steamrolled Danny along with the people he reported for doing wrong. I was 13 years old when I first saw this movie in the spring of 1981 and this was the message that I learned from it. I am also going to say, considering that this movie was set in the early 1970's, today I think that the Government would actually steamroll the whistle-blower/do-gooder.