Oh, boy. Maggie and Daryl really went to the Dark Side in this one. When Maggie realized that the Oceansider was inspired by her execution of Gregory, I thought she was going to come around. I couldn't believe it when she walked away. I think I see what's going to happen now. Rick will be martyred to the cause of a lawful society, which will cause Maggie to leave and Daryl to take up the mantle of leadership. I'd kind of expect Micchone to do that, but Daryl is the fan favorite.
And Jadis is seeing helicopters again. And now she's in contact with them-- and, apparently, providing them with letter-graded abductees? Looks like Gabriel may not be long for this world, so it's a good thing he believes in an afterlife. But the really weird thing is, why didn't anybody else notice that helicopter. In the darkness and silence of a post-Apocalyptic night, those sounds and lights would carry far.
And, although the vigilante-style hunting and killing of former Saviors is wrong, it does bring up a point that Rick overlooked. While most of the people who lived in the factory were just oppressed peasants who had no choice but to obey Negan's authority, there were people who worked for him willingly and happily, and enjoyed the license to be brutal-- people like Simon, and the two who were killed last night. Perhaps they, like Negan, should have been treated as war criminals. Maggie made an error in not holding a trial for Gregory, but Rick may have made a similar error in not holding trials for Negan's storm troopers.