Of the many horrifying things that have happened during this presidential campaign, the "locker room talk" thing is really the only one I want to talk about. Namely, I want to talk about what bystanders should do if they don't want to look like enablers or worse, co-travelers when various bigotries as used a humor or bonding mechanisms.
First of all, "locker room talk" is rarely confined to locker rooms. I certainly hear sexist "locker room talk" in my day to day life, and I don't go into male locker rooms. I've been in meetings where someone has said some horrifying sexist thing, and everyone just lets it go, probably because no one knows what to say. The thing is, if a woman says something, she highlights her position as an outsider at best, and more likely gets dismissed as an overly sensitive complainer. Ditto for people of color and racism, LGBT people and homophobia, religious people and Islamophobia/anti-semitism/anti-whatever (the first two are far more common in Prodigal city, but YMMV) or whatever. Calling someone out on their bigotry is much more effective when it is someone in the "in" group, because then it becomes clear that these comments are unacceptable period, and not just to the outsider.
It is really difficult to be the one who says something, particularly when there is a power imbalance. When I was a student, one of the professors I interacted with was fond of racist jokes. It took me a week or so to work up the gumption to say something, and I spent a while thinking about what exactly I would say. After I decided to say something (and what that something would be), the next time he told a racist joke in front of me, I told him that I did not like that type of humor, and would prefer if he didn't speak that way in front of me. To my surprise, he apologized (though he really should also have apologized to the non-white people he told these jokes in front of) and never repeated that kind of humor in front of me again. Our working relationship did not change, even after this discussion, which was a huge relief to me, but it certainly could have, which would have changed the course of my career (and probably for the worse). I lucked out there.
The truth is, I think most people don't see themselves as bigoted. They may say these things unthinkingly, out of habit, or out of a desire to fit in (if they think most people would appreciate their comments). Calling someone out gently may get them to reconsider these kinds of remarks. And even if a bigot remains a bigot (but stops doing so in public), at least the local environment is improved for their targets.
Given that Trump's "locker room" comments were about women, what I want to say to my male colleagues is that they should think about what they would say to someone making similar remarks now, BEFORE it comes up so they are prepared. One of my male colleagues, after a meeting where there were horrifyingly sexist remarks, said that he was really shocked and unhappy about the comment, but didn't know what to say or do, and that now he regrets it. I told him that it isn't too late--he can still speak to our colleague in private, or at least he can think about what he wants to do the next time.