Would the rape have occurred if........

I don't know. It depends. Gender doesn't equate character. Or courage.

Maybe. The whole thing was that they were all drunk and Sarah seemed to be turning on the first guy with the dancing, so he decided to have sex with her there even though she really didn't want that. She is even saying no, but he doesn't listen. Then others join in, which is what made it worse.

Would the rape have occured if they had yello???

If Tough Grunt hadn't been so impatient and taken her outside, someplace private to have sex with her? He could have picked her up and taken her to the bathroom for a quickie. But no, he had to take her in public with all those other people around. She probably wanted to have sex with him, just not in public. Dumbass.

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I don't think so, I think the women would have ran in fear that they would be next or worse the men banded together to get them all then there would have been more then one victim.

Would it escalate to the first rape? Still possible. But the gang rape would be likely not happening. As this is the local bar, more women would mean most likely more wifes. So the wifes would likely not actively stop them, as they are not in the majority. But they would drag their husbands from the scene and tell them to make Scorpion shut up.
Why would the first rape still happen? The waitress was basically the average lady (in this town). She preferred to look away AND was thinking it was partly also Jodis fault.

Well, you look at this movie now and apply it to the real world in 2024 and no matter what, the men will always be guilty no matter what the defense is, no matter how good your attorney may be.. The deck will always be stacked against you in an Oprah Me Too Justice System in 2024 where the victim can blow something like this off for decades and I mean, DECADES and in the end, she'll still win..