Ban assault rifles, and liberals will no longer be able to paint conservatives as paranoid, right-wing gun nuts. They will lose a major source of their ideological strength, and millions of votes. Shotguns, handguns, and single-shot rifles can all be used for sport. There is nothing nutty about them. Assault rifles, on the other hand, are solely for killing. Ban assault weapons, and rightwing gun owners will become normal folks again.
If you doubt this, just remember Obama’s famous remark about conservatives clinging to their guns and religion. It was purely calculated to stir up fear and ridicule among Democrats.