Every big city with large minority populations end up with a DeBlasio type as mayor. Ignorant people vote ignorantly.
"A Democracy cannot exist as a permanent form of Government. It can only exist until the voters discover they can vote themselves largess of the public treasury. From that moment on the majority always votes for the candidate promising the most benefits from the public treasury with the result that Democracy always collapses over a loose fiscal policy..." Professor Alexander Fraser Tyler writing when the states were still colonies of Great Britain, explaining why democracies always fail.
"Between a balanced republic and a democracy, the difference is like that between order and chaos." John Marshall, Chief Justice of the Supreme Court of the United States from 1801-1835
"Remember, democracy never last long. It soon wastes, exhausts, and murders itself. There never was a democracy that did not commit suicide." John Adams.
More here.
http://foundationfortruthinlaw.org/quotes.html