Men's Group

Back in the 70's, hacks like Dworkin were telling everyone that the proliferance of porn would lead to increased incidence of rape based on their flawed rad-fem "theory" of "male gaze", "objectification", "sex object" etc. Well guess what? Porn proliferated exponentially and the incidence of rape went down significantly over the same time period, which was exactly the opposite of their claims. Frankly I find these concepts insulting because it suggests that men are simply instinctual beings with their brain hard wired to their dick and lack the cognitive capability to resist primal urges. Not surprisingly these failed ideas were developed by people who really had no formal education or experience on the subjects in which they were writing.

Furthermore, I'm not really sure what you mean by "mainstream concerns" because those flawed ideas aren't even mainstream within the feminist community, let alone anywhere else.
http://nymag.com/nymetro/news/trends/n_9437/