The point that most resonates with me in the OP is the one about defensiveness. Not All Men, or Not All White People, or Not All Whoever is technically correct, but allows me to simply throw up a Not All! and absolve myself of responsibility. Lalala, I can't hear you.
My paternal ancestors came from Texas. They were there a long time. They were poor - very poor. And they did not own slaves. But for me to say 'My kin didn't own people, and in fact Old Jim was considered a member of the family' is a move to wallpaper over my part in the racial disparity today. Just because my family wasn't directly involved in the institution of slavery doesn't mean that I as a white person don't benefit from an unbalanced society. Maybe I'm willing to acknowledge that I do benefit, but Not All keeps me from looking at what I might be doing to perpetuate it, or see how people who look different than me experience daily life in a way that I can't comprehend.
Same with Not All Men, I think. Are all men rapists? No. But how do men participate in a culture where consent is devalued and where women are lesser? I got a two great examples of this the other night. I was at a gathering of friends of BillW, and the attendees to this book study are all male. They are all nice guys, with years and decades from the last drink, and jobs, families, etc. But two things happened that had me wincing:
1. Three of the men started talking about another guy, who is using pot, has some mental issues, and has a history of hitting on every female newcomer. After a meeting a few nights ago, he offered to take the brand new young female newcomer to his house 'for coffee and to talk some more.' Dude has a known history of sex with new women, and my buddies here were saying 'Yeah, I shoulda done something,' which turned into 'Well I don't really know him all that well,' and finally went to 'Normally that older woman sits in back and if she had been she woulda seen what was going on and woulda put a stop to it.' OMG guys. You all know his history, saw what was going on, did and said nothing, and in the course of this conversation blamed it on an old lady for sitting in the wrong seat? Give me a break.
That, my friends, is 'totally innocent guys' contributing to rape. You cannot tell me that someone still hung over in a meeting is capable of giving consent. There's too much power imbalance, just for starters. So no, nobody in the room a couple of nights ago raped this woman. Not All Men!
2. This is more minor, but I'm the guilty party. During the course of this gathering, two of the guys made comments that were highly disparaging to women - not specific women (if you talk about your ex I can't argue because I don't know here, although it's probably poor form of you to be badmouthing), but Women In General. These comments were sweeping and demeaning generalizations and got a good laugh from the assembled. I didn't laugh. But I also didn't say, 'Guys, that's far out of bounds and you know it.' I just let it happen. Why? Because there was no good outcome for me. They're gonna look at me and say, 'What are you, some kind of feminist?' and in that room of jeans and steel-toe boots and Cabela's caps, it's not gonna go well. So instead of standing up for people who weren't present, I did what was safest and easiest for me. You can argue that I was under no obligation, and I guess you're right. But instead of promoting the value of every human being, I took a cowardly path.