The tobacco industry is indeed a good example. People, including my mother, were dying horrible deaths from lung cancer while the tobacco industry was altering their product to make it more addictive and running a marketing campaign aime at teenagers. No they didn't admit it and yes they were doing it. Immoral corporations, stupid consumers, and so on. I started smoking when I was 14. Yes, I knew it was harmful. I recall my high school math teacher, when he spotted my package of cigarettes, saying "You still smoking those coffin nails?". We knew. Sometime around 1980, I don't remember exactly, I spent a semester at Berkeley. San Francisco had just passed a law banning, or at least restricting, smoking in restaurants. There was a grass roots uprising with many signatures demanding a referendum. Momentum was building against such government interference with individual rights. Until it was demonstrated that the signatures were fake and the whole referendum movement was financed by the tobacco industry. At the time I predicted that by 1990 smoking would pretty much be totally outlawed in public places. I was off by a few years, it took longer, but it has happened. At some point people look at something and say: "This is nuts." Then things change. It doesn't happen overnight, but it happens. I think that ten or fifteen years from now we will look back in wonder at our permissiveness with guns. What in God's name were we thinking? I may again be off on the timing, but I think I am right about the eventual result. Sooner would be much better than later.