Back in the early 70s there was a significant surge in interest in socially responsible investing. There was lively debate with articulate advocates like Milt Moskowitz (book plug here) writing in the New York Times, and smart people like Milton Friedman and Burton Malkiel (see his speech in this anthology) raising concerns about the emerging practice.
And that was really the high-water mark for a long time. The general interest in social investing sharply tapered off as the energy crisis hit and the Nifty 50 era came to a crushing end with the 1973-74 bear market.
The present era bears a lot of similarity with those days. Oil prices are through the roof, and with the $100 forecast now looking kind of plausible, the hot new forecast is for $200 oil.
And yet interest in SRI has never been stronger. You see SRI in places it has never appeared before, like The Motley Fool and Value Line (thanks to Lorne Abramson for the tip on that one).
I suspect some of this has to do with the sophistication of the tools available today - social investors can manage portfolio risk in ways they couldn't in the 1970s. Also, there are more funds in different styles, including some good value and and contrarian choices, so performance hasn't been universally poor during the energy bull market of the past three years, despite the weak recent returns of the social indexes.