The Handmaid's Tale by Margaret Atwood:
I was stunned. Everyone was, I know that. It was hard to believe. The entire government, gone like that. How did they get in, how did it happen?
That was when they suspended the Constitution. They said it would be temporary. There wasn’t even any rioting in the streets. People stayed home at night, watching television, looking for some direction. There wasn’t even an enemy you could put your finger on.