Democracies devolve into mob rule? I dont see mob rule in the UK, or Canada, or Australia.
You're not thinking about this issue very deeply, and you're showing a lack of knowledge of what the word democracy actually means. Your suggestion that the UK, Canada, and Australia have pure democracies is proof of that fact. They do not have pure democracies, and I'm not aware of any current examples, but they do all have obvious elements of democracy, some more so than others.
Two examples of democracy in action in my local area...
The issue went to ballot, and the public voted to ban smoking inside
private property. Not inside government buildings, but inside a bar or bowling alley owned by mom & pop. The business owner and the regular patrons were denied the right to smoke where they've always been perfectly happy to smoke by the majority (most people don't smoke) at the polls.
The Dayton and Cincinnati area is really hurting for jobs. Wilmington in particular, since DHL moved out of what once was a large shipping hub for them, providing a great many jobs to the whole city of Wilmington. Recently a group proposed building a casino resort near Wilmington, catering to the populations of Dayton and Cincinnati, and thorough plans had been made. There were other casino locations planned around the state of Ohio, which was once industrial and prosperous but at the time of this issue was stricken with unemployment. For some strange reason this casino proposal made it to the voting ballot. It was
voted down by a majority concerned about crime or whatever, denying thousands of opportunities to a jobless minority.
Another example of democratic principles spreading throughout the US's republic. The Senate, which is the house of Congress next to the House of Representatives, holds members who are voted into office by the residents of that particular state. That wasn't always the case.
When our government was conceived, the House of Representatives was designed to represent the residents of various small regions within each state. The voting was done by a small local group of people, today maybe 500,000 people in a state of 20 million. But Senate members were elected by the governments of each state, not the people within the state. The House was designed to represent the interests of the people democratically, while the Senate was designed to balance that potentially dangerous democratic rule with the interests of the state as a whole (each state has its own constitution, and its government members are elected by people from that state, obivously). By giving the states the power to elect Senators, the states had a better chance of ensuring their sovereignty from the Federal government (which, remember, was designed to have very little power), and also ensuring that the state would keep the power to provide for the people in that state, without people from other states electing Senators who tried to take those powers away.
But democracy spoke, and that rule was changed. Nowadays Senators are also chosen by the people. What this has done is stunted state sovereignty severely, giving states very little power to provide for their people, and transferring all that power to the federal government.
One of the basic principles of a Republic is personal responsibility. Throughout the history of our country, the proliferation of democracy has corrupted the republic, transferring decision-making power away from the individual, away from their neighborhoods, or their local support groups, or their city, and away from the state, and given all that power to the Federal government. That's the way the people want it - it's easier if somebody else deals with your problems - but that's not the way that works. It's quite obvious now that one nation government is incapable of providing for all its citizens, who all live in different areas with different heritages, different professions, different resources, different needs, different religions, and different views of the world around them.
In a Republic, important decisions are made at the community level, and the Federal government's only job is to ensure that those people remain free to make those decisions.
A republic prevents oligarchy & mob rule? How about the Republic of Argentina with its constitution of 1853 closely modeled on the US Constitution? It was followed more than a century of revolving coups, popular uprisings, corruption, rule by oligarchic elites, military dictatorships, right & left wing terrorism, extra-judicial arrests, torture & executions. Take a look around the world today & see how many so-called republics are in a similar state.
The video clearly explained that it takes effort and caring by the people in order to keep a Republic alive and working. The video then clearly explains that if they stop caring, the powerful people within the government rise up without being noticed and then everything goes to hell. This is the condition that is plaguing countries around the world. After the US was founded, it set an example that led many other countries to follow a similar route. Then they all stopped caring. Luckily many US citizens are passionate and resilient, though we are teetering on the edge of our fragile government falling apart.
Or just look at the history of the United States. Ive already shown how the adoption of the US Constitution didnt prevent the continuation of slavery for another 90 odd years, it didnt prevent the destructive violence of the Civil War & it didnt prevent another 90 years of institutionalized racism.
The idea of Live, Liberty, and Property is a fairly new idea in the history of humanity. A basic idea of liberty was understood by the people trying the defend the Roman republic during their Crisis. Two thousand years is a drop in the bucket compared to how long the human brain has been evolving and philosophizing. Things are learned along the way, but despite the mistakes (the misunderstanding of minority rights was eventually corrected) our Constitution is certainly the best effort in the history of humanity. All people need to do is give a crap and we could keep this thing going.
Heres what I would suggest: instead of immersing yourself in these cheap polemics, why dont you try reading some actual history? Why dont you try reading some of the serious thinkers on libertarian principles: Rosseau, Locke & Henry George. Read Hayek, Rothbard & Nozick. And then, so that you understand some of the opposing ideas, read Hume, Marx & Engels, Bukunin, Russel, Keynes & Rawls.
You've been around here long enough to know that I'm a devout studier of Austrian-theory economics, am always arguing from a moral perspective, and am a staunch libertarian, knowing that all three of those things are virtually synonymous.
Then come back & tell me if you still find that little American Government video so compelling.
The video was made and narrated by Aaron Russo, an outspoken libertarian movie producer.