It might just be useful if you and others would read the entire 2nd amendment to the US Constitution.
This amendment was NOT written so that people could either own firearms necessarily or form militias to protect themselves from the federal government.
It WAS written so that the federal government could depend upon an armed populace being able to form such militias (which are now called the National Guard) to protect the federal government FROM insurgencies (such as the Confederacy during the Civil War) both without (by foreign invasion) and within the US itself.
Hopefully, the intelligent citizens of this great country do not feel that they ever will need to protect themselves from the very government that they themselves have elected!!
That is the true essence of a democratic republic, even if it also has some degree of socialism as a part of its makeup!!
If you and others here do not understand that , then your knowledge of American History is extremely shallow and limited.