They’re referring to the shifting variance between political sides and the range expressed between them. The Overton Window usually.
The Overton window is the range of subjects and arguments politically acceptable to the mainstream population at a given time. It is also known as the window of discourse. The key to the concept is that the window changes over time; it can shift, or shrink or expand. It exemplifies “the slow evolution of societal values and norms”.
Outside of this window you still have Left and Right, but they’re the more extreme beliefs that the general populace doesn’t currently accept. The window shifting over time means something that would have been considered absolutely insane 20 years ago, could be entirely mainstream now.
A current example would be federal deployment of the military to handle local protests when there is no declared State of Emergency and local government doesn’t need or want assistance.
They’re referring to the shifting variance between political sides and the range expressed between them. The Overton Window usually.
Outside of this window you still have Left and Right, but they’re the more extreme beliefs that the general populace doesn’t currently accept. The window shifting over time means something that would have been considered absolutely insane 20 years ago, could be entirely mainstream now.
A current example would be federal deployment of the military to handle local protests when there is no declared State of Emergency and local government doesn’t need or want assistance.
Yep, that’s a big part of it…
But there’s other aspects too (see my other comment replying to Arkouda)