"Potentially, a government is the most dangerous threat to man's rights: it holds a legal monopoly on the use of physical force against legally disarmed victims."
Like everything Ayn Rand, that's completely upside down, since government is also the only entity that has ever succeeded in guaranteeing people's rights.
So government is the best friend of man's rights, while libertarianism is the biggest enemy. Libertarianism = corporate feudalism.