One thing to consider, the meaning of words in the English language has a tendancy to change over time.
For instance, when Shakespeare talked about "first thing we'll do is kill all the lawyers" in one of his plays, he wasnt referring to attorneys, who we call lawyers nowadays. He was referring to legislators. If he'd meant attorneys/lawyers, I think the word he'd have used is 'ballisters' or something. I dont remember exactly. Magistrates, perhaps? Bah, someone on here will be able to fill in that particular tidbit.
Anyway, in the case of the 2nd Amendment, 'regulated' doesnt mean the same thing as when we think of the word regulated today, i.e., bogged down in useless .gov requirements, rules, procedures, etc. The best translation I could give for 'regulated' in the 2nd is 'equipped'.
What they're basically saying is that "Since a well-equipped militia is necessary to the security of a free State, the right of the people to keep and bear arms, shall not be infringed".
But, as with anything else, when liberal communist-socialists get their dirty little paws on it, they try to pervert it. In this case, they try to make it seem like the 2nd actually reads something closer to "The National Guard of each State shall be allowed to possess and train with firearms", or something like that.
And its not just the 2nd that they've done that too, either. They also managed to change the 1st so that instead of reading "Congress shall make no law...", it should say "Congress shall make no law unless it deals with assigning extra penalties when a white heterosexual uses a word like f*g, n1gger, or wetback; or desecrating national symbols without any kind of spoken or written word; or banning a song/artist who sings about things that enough people find objectionable; or if the words in question might make someone incapable of self-control attack the speaker". Or something like that. The things I am referring to in this example are 'hate' crime laws, burning the flag WITHOUT actually saying anything, or having a sign, placard, whatever whilst you do so, 'fightin words', and Ice-T's song "Cop Killer". FWIW, I dont agree with someone burning the flag, and would probably knock them out if they did so in my vicinity, but if they actually are saying something, then that IS free speech. Objectionable speech, yes, but still speech. Its when they DONT say anything, just burn a flag because they can, that I think they are no longer covered under the 1st.
Then there are such wonderful things as police roadblocks and no-knock warrants.
And I dont think its really necessary to go any further with how the rest of the Bill of Rights has been re-interpreted to mean whatever the Party wants it to mean. The point has been made, neh?