2. Forcing social media firms to delete specific kinds of content is another (albeit controversial) example.
3. Redacting all info about Saudi involvement in the 9-11 reports is a great example of censorship under the pretext of national security.
4. The SESTA/FOSTA bills are a recent (but again somewhat controversial) example.
5. Plenty of movies have been censored. One can easily google examples of this.
6. Many works of music too. Just ask the rappers.
7. Forbidding swear words in public/recorded speech is/was a great example. Although it is also an example of self-censorship among Americans.