When liberal democrats become arrogant and forget that governments have an obligation to create the circumstances for widespread well-being, autocrats will always be there offering security and prosperity in exchange for less freedom. Liberal democracy must be defended. It must also deliver the goods.
The "bottom line" for Dionne, is that those governing our nation (and he calls them "liberal democrats") have allocated too much to the rich, and not enough to everyone else. Our government is serving the 1%, not the 99%, and this is putting the whole premise of our democracy in peril.