The collective interpretation of the 2nd Amendment is one of the most ridiculously anti-freedom arguments available.
1st Amendment: Individual protection against restriction of the right of speech, religion, press, assembly, and petition
3rd Amendment: Individual protection against quartering soldiers in peacetime (the ignored Amendment)
4th Amendment: Individual protection against unreasonable searches and seizures.
5th Amendment: Individual protection against juryless indictment, confiscations of property, double jeopardy, and compelled testimony.
6th Amendment: Individual right for a fair and fast jury trial, defense lawyer, and to be able to call witnesses.
7th Amendment: Individual right for a jury trail in cases of more than $20
8th Amendment: Individual protection against cruel and unusual punishments, as well as excessive bail
9th Amendment: Individual protection against shitty legislation and legal arguments claiming that rights not listed above don't exist
10th Amendment: Group protection for the States to maintain jurisdiction on anything not specifically delegated to the Federal Government (the most trampled on Amendment thanks to abuse of the Commerce Clause and somewhat of an odd duck, being one that pertains to State-Federal relationships instead of Federal-Citizen)
(Also, please note that, Federalism concerns aside, the large bulk of these Amendments are firmly incorporated, that is to say, they restrict State-Citizen affairs as well as Federal-Citizen. There are some exceptions, but those are largely a matter of not coming up in cases or not mattering. Wikipedia is an excellent source for delving into this somewhat strange oversight in the modern legal landscape.)
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The idea that the 2nd Amendment only pertains to the National Guards of the States or the amorphous concept of militias that are well-regulated is twisting of words, dishonest, and flies in the places of established precedent
DC vs Heller:
[The 2nd] protects an individual right to possess a firearm unconnected with service in a militia, and to use that arm for traditionally lawful purposes