Ban Imus from radio? Go ahead! You can pressure anyone to do anything you want them to do. But government censorship is NOT the answer. Bruce is right on this one. Like the wiretapping of phone lines, many consider censorship perfectly fine as long as the target is others. The problem is that a government can apply those powers as they see fit : To solve crimes, control racist behavior, or repress dissent and religious or other freedoms.
You want Imus to lose his job, you use what's known as a boycott. You don't listen to him, you picket his studio, you refuse to buy his advertised products. But anyone who says the law should be applied in this case is way off base, in my opinion.