http://www.youtube.com/watch?v=-KAk7o1gQm4
http://www.youtube.com/watch?v=A1r1av1Shn4&feature=related
http://www.youtube.com/watch?v=Y35ZUDcieds&feature=related
http://www.youtube.com/watch?v=xY_AGlAqcm0
Since you're being so specific that "a player walks up to a camera and swears" I know you'll pick up that these are post-match. But, both are live on daytime TV. In fact, it is far worst post-match as the noise is lesser and the swearing is far more audible than Rooney's. So how you can say Rooney deserves punishment and it's a completely unique case, so he should be made an example of; in the words of Alex Ferguson, is complete bollocks.
I already watched all of those videos, and your argument is complete bollocks. All of those cases were completely accidental in post-game interviews, and none of them were malicious statements. If any of them were fined, I wouldn't be bothered, but what Rooney did is totally different. He deliberately went up to the camera and said "**** off." He intentionally swore at millions of people, and it was a malicious statement. Letting an F bomb slip during an interview, or labeling criticism as a 'load of bollocks' is very different from telling millions of people to **** off. It's also unprecedented, and the FA made an example out of him. Even if it was harsh, all of the ManU fans on this thread have focused on everything other than the fact that Rooney made a stupid mistake and let down his team.