Lockes 2nd Treatise on Government is a good resource for pulling together what the Founders believed and exactly what they wrote in the Constitution.
“(if I hear one more idiot say in a smug tone of voice the milita, in other words the NATIONAL GUARD Ill have a brain aneurysm)”
Try this: Respond with a question, a favorite tactic of their own...
“Are you a Trump supporter?”
Then, after the obvious answer,
“Do you fear that he is a threat to rights, such as gays and abortion?”
Again, wait for the answer.
“Then certainly you would be opposed to his using the power of the government to suppress you and take away those rights, correct?”
(this will work better if they’re a minority, race, gender or otherwise)
After the obligatory answer,
“How, exactly, do you plan to stop him putting you and all other liberals on a train and placing you in a gas chamber?”