To further on the horrors (pun not indented) of the anon that talked about the 1992 Dracula movie-

Apparently during the filming of the scene where the crew finds Mina after she drank Dracula's blood, Winona (who played Mina) said that Coppola was shouting "SLUT!" and "WHORE! behind the camera to make her look guilty.

He *even demanded that the other actors do the same*, Anthony Hopkins (Van Helsing) and Keanu Reeves (Jonathan Harker) were apparently the only two that straight up refused to do so.

When I went to look this up, I found this article which kinda walks that back, though certainly not all the way. More whisper than shout, "horrible stuff" in character to make her sad/teary rather than specific sexual insults. And it seems some of it was possibly tied up in tension with Oldman, who Ryder didn't get along with on set. But who knows how much of all that was publicity related (on either side I suppose, shock value or smoothing things over, though I'd definitely defer towards believing the victim). I don't ever really read interviews or follow celebrity news or behind the scenes type stuff, so I am not particularly prepared to play detective about this kind of story, nor is lengthy discussion of these sorts of things my preferred way to spend my time. But honestly, regardless of if it was as bad or worse as what you said, or as mild/milder than the article I pulled up, it's still unpleasant either way.

As a rule I am highly skeptical of the efficacy of any 'method acting' techniques where an actor or director subjects their coworkers to any kind of nastiness in the name of an 'authentic reaction'. Their jobs are to act, you should expect them to act, not try to force them to react genuinely. If they want something more genuine then they can request it - "surprise me at some point so I can get off a really good scream" or whatever. Or you can ask them if it would be okay ("can I jumpscare you for real at some point" or whatever, doesn't have to be specific enough to ruin the genuine react you want). Similarly if you wanna stay in character because it helps you, sure, but don't make that other peoples' problem. It's like that one post going around talking about how you almost never hear of people method acting nice and kind characters, only assholes. Can really feel like grabbing onto justification to be cruel. Even if it 'works', that doesn't make it worth it, nor make it the only way to get that good take.