But in newspaper times, people in the news didn't just type up what they were thinking and doing, journalists had to actually go out and find out what was going on themselves, usually by hacking people's phone messages. It was a
different world."
- Cunk on Everything: The Encyclopedia Philomena

A "journalist" is what we nowadays call a "content provider," someone who copies and pastes what people are saying on Twitter and puts it into sentences, and it's those sentences that make Twitter into news.

Newspapers were how people in olden times found out what was going on the day before. The words in the newspaper would be
made up by people called journalists.