I need to find two short stories based on a theme of ensorship or political correctness similar to that of Ray Bradburry's F451. If someone could give me some suggestions for stories like that and possibly where to find them I'd really appreciate it.
P.S. Although this probably won't interest you I have to get 5 or 6 quotes from each story proving their themes are censorship.

"The Pedestrian" comes immediately to mind...

... and Usher II, from Martian Chronicles...