The repetition here is interesting. Why twice? Is the angry mob trying to convince itself that they really will go back out and leave Laertes alone? I mean – they can’t entirely be sure this is a good idea, can they? Their adrenaline is up. They just broke through a door. Leave? Ohhhh. Uh.
We will. (I guess.) We will.
The crowd is powerful. They’ve broken the doors. They have a taste of what might be possible. They could do any number of things that were normally outside their realm of possibility. They’ve just fought their way through the palace, probably past a lot of guards. Odds are good they’ve killed or wounded some people to get there. This is probably their first time in the place. They’re seeing things they’ve never seen before – and not just seeing the palace on a nice guarded tour but with their own authority. They are claiming each room they move to as theirs as they go. They take possession and keep pushing forward. And here they are in what may be a particularly intimate royal chamber or even a throne room. They are at the heart of the seat of power and they are vibrating with their own power. To leave now —well, it halts the progression, the build – what will they do with the adrenaline surge if they can’t come in and kill the entire royal family?