Some will not remember this, but back when Rick decided to take to the offensive and raid the Saviors’ territory, before Negan had killed Abraham and Glenn, there’s a moment where we see a wall covered in repulsive Polaroid pictures. They’re all victims of Negan who’ve had their heads bashed to bit by Lucille.
In episode three, Dwight delivers a little gift to Daryl – it’s certainly something to think about, and there’s a message behind it. If you fight the law – the law being Negan – you get your brains bashed in. Plain and simple.
That’s a heartbreaking Polaroid to see, and it definitely works to accelerate the process of breaking Daryl down.