Libertarianism is flawed

Please ignore the videos until you're requested to wash them. Thank you, you have no idea how long I've been trying to find someone who can give me a straight forward answer. I been talking to a few libertarians over the last few weeks, who at first seem like they actually wanted to discuss their beliefs in a rational and logical chat and that was true, until you bring up any criticism, which then it's you're a fascist or you're a Communist or you're an idiot and you don't know what you're talking about. Out of 12, so-called libertarians I've talked to, HandsofManos and MrDaMan on YouTube seem to be the only actual libertarians who weren't anarchists or anarcho- capitalists, and all my criticisms of libertarianism were because of those people and their extreme ideology. So, because my opponent is not one of these anarcho- capitalists, all my hypothetical scenarios have been a waste of time and I hereby forfeit the argument to my opponent, but I will like to spend the rest of the debate asking straightforward simple no-nonsense questions about actual libertarianism and not the anarchist BS being circulated across the Internet disguised as libertarianism. But on that point, I will say this to HandsofManos and any other libertarian out there reading this, there are a lot of idiots out there calling themselves libertarians, and spouting a load of nonsense and the problem is, these are the people everyone including me are seeing when we researched libertarianism. For the sake of your beliefs, you got to get out there and set the record straight. Because actual libertarianism is still hard to swallow, and takes a lot of convincing so the last thing you want is people comparing you to these freaks. Here is a good example of what I'm talking about, this is a video I found a few years ago, it's a libertarian talking about an experience he had with some libertarian socialists. (Please click on the first video at the top of the page) http://www.youtube.com... This video state's my point exactly, that there are some diluted brain dead idiots out there calling themselves libertarians, who have no problem with violence, as long as it pushes ahead their agenda. And I can easily tell you, these are the people I was talking to over the last couple of weeks. So to finish off this point, any future strategy to spread the word of libertarianism make sure to distance yourselves so far from any of these crazy so-called libertarians, so that people like me, we'll be able to tell the difference. One other thing, I don't know if you notice but he mention utilitarianism in that video. Sadly saying that utilitarian theory is used mostly by statists and I think he's correct. However I am more concerned with the greatest happiness principle, and if more people are happy in a libertarian society then I'm all for it. But before I give my support I first need convincing, so here's a plain simple question, how much power should the government have and what is its duties to the people. Basically what I'm looking for with this question is are there still police and is there still a military of some sort. Now I could see a world where we don't need police or the army, but that's in the future and definitely not now, I mean you can probably still go to Los Angeles and ask around and hear all the problems people have with the police and a lot of it is most likely true, but if you asked those same people, would you feel better if we got rid of all the police and had nothing official to take its place. They would probably look at you like you're crazy. And as for the army, will let me just say I have complete respect for Britain's Royal Armed Forces. And every soldier in it and because of that, I don't want them going off to fight a war in a country we have no business being in. I support the war in Afghanistan but I don't support the war in Iraq, and we should stay the hell out of Iran and North Korea, unless they actually are stupid enough to fire a missile at us. So what I'm wondering is what libertarians believe a country's military is for, and if there is no police or army. Then what exactly would take their place. One last thing, now this is definitely more towards the extreme right, but libertarian policies on immigration are another thing a lot of people are confused on, our libertarians for completely open borders, or simply for more movement across said borders. Now here's a video, I think you should watch it says on the title "A Case For Libertarian Immigration Control (US)" but I'm not quite sure if it's criticizing or supporting libertarianism. You be the judge, and I would like to see your comments on it. (Please click on the second video at the top of the page) http://www.youtube.com... You see, no more crazy over-the-top scenarios, and no more talking about Larry and his stupid family, just straightforward questions, I look forward to your response.