Yes - thanks for that. I see that the TSA website has a “Report Security Violations and Concerns” email address. I certainly do feel strongly about the possibility of another Lockerbie. Essentially Continental at Newark are inviting anyone to ship a large bag or bags on a packed passenger plane, and no, you don’t actually have to travel with it.
If anyone wants to counter that modern security screening makes that highly unlikely, just google “Newark airport security” and settle down for a long read…