Don't get too worked up about this ad. It's produced by intellectually dishonest people.
So like I say, this ad wasn't the work of the mainstream Democratic party.
Its use though, is as a litmus test. Ask Democrats to "refudiate" it. If they do, they're still interested in the truth. For that matter, they understand that the Ryan Plan doesn't eliminate Medicare, just makes necessary changes for those folks under 55. That way, Medicare will be around for all of us later, when we retire.