This insight came to me from a line from the show Elementary (Sherlock spinoff), in which Sherlock claims: "I find blackmailers to be more despicable than murderers in some ways" in an episode where he deals with a professional blackmailer. Its true isn't it? While murder is instant, blackmail is like a slow torture, forcing one to slowly sacrifice everything they have. Professional blackmailers especially are dangerous, they turn secrets into poison, siphoning every last bit of money from the victim and their loved ones. I'm sure we've all been blackmailed to some degree in our lives, although most probably have the decency to only make one demand, rather than continue posting the threat. Theoretically with an important piece of information or an important person/asset, the other person has you in their pocket (THIS is also how organized crime works, through "favours" that result in eternal, forced loyalty, and the constant threat of death or torture to "stay in the game" and do what one is told). In many ways blackmail is a pervasive evil, even more dangerous and more difficult to deal with in some ways than murder, because a blackmailer has some degree of immunity merely because he/she has a threat to deal. The threat of blackmail is also very dangerous in the world of politics, especially from those who wield significant influence over the media (for its ability to blow small events out of proportion). The frightening reality of this is that nobody can be truly free or objective, especially those with power or fame who have the most to lose. Blackmail is a coward's way, but its clear that its dynamics run many of the systems in our society. Do you agree that blackmail is one of the worst evils?