The universe holds immutable truths: matter cannot be created or destroyed, an object in motion will stay at motion unless acted on by an outside force, and any time a woman points out sexist bullshit, some hero's opinion will gallantly ride in on a fedora, chiming in "Not All Men!"
Now, thanks to the internet's collective sillybrain, Not All Men! has gone from an irritating trope to a funny, giddy skewering of point-missing folks whose knee jerk reaction as part of a privileged group is to defend themselves against implications that they, as members of the complained-about privileged group, might be complicit in the status quo. It's defensive bullshit that doesn't really do anything but prove the bearer of Not All Men is more concerned with saving face for themselves than, you know, actually acknowledging the concern that another person is expressing. In the Not All Men mind, it's worse to be called sexist than to actually be a victim of sexism. Here are some typical places to find Not All Men in the wild:
College women getting raped, like, all the time? Not all men!
Street harassment? Not all men!
Domestic violence? Not all men!
Bosses who talk over you in meetings? Not all men! [Your Guide to 'Not All Men,' the Best Meme on the Internet Erin Gloria Ryan, May 8, 2014]
Also, of course, Muslim terrorism and minority crime—hijacking planes and bombing people? Not all Muslims! Flash mobs and crime? Not all blacks!("Not all blacks" was a major talking point used to bash John Derbyshire after his "Talk" article.)
See I refuse to say ‘not all Muslims.’ Who’s with me?, by Kathy Shaidle, January 11, 2011. (Kathy also likes to point out that during WWII no one said we were at war with either "not all Germans" or "not all Japs." )
Of course, the key here is "privilege"—men are "members of the complained-about privileged group", so they are not allowed to protest.
This goes double for white men, about whom you can say anything.
As I wrote last year
Joan Walsh, a Nice White Lady who is “editor at large” at Salon, commented that whites had no business complaining about racial epithets (even if they preceded what in one way or another was actually a hate crime) becauseThis, of course, is not true, any more than it's true that no social order has ever been devised whereby women oppress the men they deride as privileged sexists :
“no social order has ever been devised whereby African-Americans oppress people they deride as 'crackers'.”[Crackers, please… | Who cares if Trayvon Martin called George Zimmerman a “creepy ass cracker”? White grievance-mongers, that’s who, June 27, 2013]
Just as a reality check, consider an actual student-related rape: in 2006, Labrente Robinson and Jacoby Robinson broke into the Philadelphia home of a Temple University student and a Temple graduate, and anally, vaginally, and orally penetrated the women, including with a gun.Philadelphia's Temple University is near black inner-city, as is Columbia University in New York.[ Man Is Arrested In Torture Of Student At Columbia, By Andy Newman, New York Times, April 21, 2007] Derbyshire rules apply. So yes, not all men.