We see a bunch of pictures of known terrorists, all with beards, and the announcer says: “Most terrorists have beards. What are you, a terrorist? Don’t make people think you’re a terrorist, use (whatever brand of) razors!”
(That’s what is called: “the hard sell”.)
This ad could also work for hipsters, showing pictures of hipsters and the announcer saying: “Most hipsters have beards. You don’t want people to think you’re a hipster, do you? Use (whatever brand of) razors.”