“If the country be invaded, a state may go to war, but cannot suppress insurrections. If there should happen an insurrection of slaves, the country cannot be said to be invaded. They cannot, therefore, suppress it without the interposition of Congress."
Patrick Henry, at the Virginia ratification convention, arguing against federal control of state militias. George Mason offered similar views. Fellow Virginian James Madison then penned 2A, borrowing some language not coincidentally from George Mason's Virginia Declaration of Rights. No hate mongering, other states did indeed agree with the preference for state control of militias without slavery as an issue, like Massachusetts.