Here’s a question for those who have seen Classic Who

Where there ever any moments with Doctors 1 - 8 when they went dark?

Can anyone name at least one dark moment for each of the Classic Doctors?

There are indeed a few moments I can think of from the top of my head. The first Doctor had a moment in his very first episode where he almost beats a caveman to death with a rock, but there aren't any other moments I can come up with right now. I don't think 2nd had any, like, 'dark' moments but he himself was kinda a dark guy despite what his clown like nature may lead you to believe. 3 does not have any dark moments I can bet my last Knut on that, if someone can think of any moments then please let me know! The fourth Doctor has his famous scene where he questions whether he should commit genocide on the dalek race while they're basically infants! He of course dosen't commit but it's still pretty dark if you ask me. 5 was not a dark doctor but he was often put in very dark situations, his darkest episode being the caves of androzani. His darkest moment was probably when he unloads a whole round of gunfire on a dalek laying on the ground. With 6 they tried to go full out with the dark stuff, in his first season alone he strangled his companion, pushed someone in to a pool of acid and straight up killed a dude using CYANIDE (don't worry he was a bad dude). 7 is by far the darkest the Doctor has ever gotten (imo). He would manipulate everyone around him, even his own companions! He in fact managed to trick Davros, making him accidentally destroy Scaro and basically committing genocide on his own race! 8 only had one movie, but he also has a bunch of adio books and stuff witch I have not heard yet so, sorry. Anyways, it's a bit long but I hope that it at least answers your question!