People who are using radios to listen to music, listen to a little station called Raider Radio, named because it's run by Raiders, for Raiders, though others do listen because they have some good music. As soon as the current song playing ends, someone who isn't the DJ picks up the mic.
"Greetings everyone listening. You don't know me, but you know of me. I am the man who runs the biggest group of Raiders here, you somethimes call us, Chemies. I am just talking now to let everyone know, that anyone who sides with these Enclave assholes, will meet with a very horrible death. If you thought we were mean now, you ain't seen nothing yet. And in case any of these Enclaves bitches are listening, listen to me very carefully. You're all dead, you just don't know it yet. And now, a personal favourite of mine, Dean Martin's Ain't That a Kick In the Head."
The mic cuts out, and good ole Deano starts playing.