The issue with this is that ultimately no individual is ever really personally responsible for a societal level action. To take a contemporary example, it's ve

The issue with this is that ultimately no individual is ever really personally responsible for a societal level action. To take a contemporary example, it's very possible that within the not so distant future the first amendment may be overturned. And it's equally possible that 50 years later it comes to be that deciding to allow the government to criminalize speech at their discretion somehow doesn't turn out so well. So people would go back to the past to try to figure out what happened. And perhaps they would decide to blame President McPolitic, who oversaw the overturning of the amendment, as the source of the problem. Surely they just used their powers to make a decision that turned out very bad. But of course it wouldn't be that individual - but rather society that somehow moved in a direction that in hindsight might seem otherwise inexplicable. The nice thing is that people looking back at today will [hopefully] have access to internet archives and they can see how things evolved. The NSA's surveillance and data collection are, in this regard, doing society a great service. They are effectively creating the greatest global social archive in the history of our species --- a sort of time capsule that encompasses the entire existence of humanity in the developed world. But we don't have that privilege when we look back at the past today. So all we can do is look at the data. Historic record, such as "the Nixon quote", cannot be taken at face value. Those casting such aspersions (or praises) have their own biases and agendas. What we do from the data is that violent crime in the 50s and 60s was very rare. But then something happened. It started skyrocketing. From the 60s to the 70s the per capita crime rate more than doubled. And drug use and abuse was also skyrocketing. Is it not reasonable to assume that people, somewhat naturally, began to link the two since they did rather often compliment one another? Now we look at drugs much more tolerably, but that too follows an interesting trend. Violent crime started sharply declining a decline in the 90s. That's a trend that continues to this very day. And our views, as a society, are reflective of this change. Ultimately I think leaders are products of society, rather than society being a product of its leaders. And thus attributing blame (or praise) to any individual is, at best, a misrepresentation of an event.