Listen to me as I talk about how the Sentinel branding D16 in tfone could be an allegory for SA
Let's start off with d16 himself
D16 is young naive hardworking top of the leaderboard, believes in protocols and the system. And also, believes that Sentinel is good.
In front of crowd, hes the noble prime of iacon good virtuous cares about his people. But once the cameras turn off.
He selfish evil manipulating and only cares about himself.
In the tower scene Sentinel is gloating about capturing the high guard.
Dee now knows who sentinel is and is quick to call him out on who he really is.
Then Dee stands up to him and Sentinel quickly knocks him down on his back.
Dee is vulnerable, unable to fight back and pinned down.
Then sentinel wields an brand on him, dee screams in pain as it happening and he permanently scarred physically and emotionally. And not only that...
It happened infront of a friend. (Imagine how scarring that was for Bee to see.)
After that dee of course, is incredibly volatile. Angry, explosive, and wants Sentinel (his assulter) dead, which something many victims of SA feel after their assault.
And he does ended up killing Sentinel...and he's still angry and ends up taking out he anger and rage at those around him, practically at the things that remind him of his assulter.
(Detail you might of not noticed, Megatron only shoots at the sentinel statues)
Later after his banishment, he turns the brand, the symbol of his assult into the official emblem of the Decepticons.
This symbolizing how victims can make their pain apart of their identity despite the pain.
And now Dee. Megatron. Is completely different from the mech he was. His innocence is gone, Sentinel took that from him. You can hardly recognize him this shows how much victims can change after their assault.
Dee was a sweet mech who had he naivety and innocence literally burned from him and reacted in a way that completely understandable. Angry, hurt, and wanting vengeance for what happened and taking it out on the people around him.
(This my personal analysis for this. I thankfully never had to go through SA so I might've said things that are incorrect so don't be scared to correct me and share your personal thoughts on this)