Questions for people like Judge Andrew Napolitano who say the Second Amendment means that people can assassinate tyrannical politicians

Questions for people like Judge Andrew Napolitano who say the Second Amendment means that people can assassinate tyrannical politicians:

"Then, was John Wilkes Booth within his right to have assassinated Lincoln given that he said "sic semper tyrannus"? In other words, Lincoln was a tyrant in Booth's opinion--was that legal justification enough to have placed the Assassination within his Second Amendment right?

Furthermore, does that make assassination a part of the Second Amendment right? So that when anyone believes a politician to be a "tyrant", they are justified in assassinating them?

How does that fit into a scheme of establishing justice as well as promoting domestic tranquility and the general Welfare?"