The end of American civilization?

I watched a movie series titled "Ancient Rome" recently. One of its famous Ceasars, known as Nero, in no small way, mirrors Mr. Trump. Nero's madness, evidenced by his obsession about theatre will eventually lead to the demise of the Roman empire. It is an open secret that Trump behaves like a child sometimes. Some psychologists say, he might be 'a real madman deep down' (check his tweets to confirm). This has led to the publication of a book titled "Fire and Fury in the White House" by Michael Wolf which speaks about the self centered, paranoid and narcissist American leader. Will Mr. Trump's behavior make America great Again as he "sloganizes"? Or will his self obsession and childlike behavior bring to an end the hard-earned American civilization as it did in the time of Nero?
Picture courtesy: David Erland Isaksen, Intelligence of Persuasion