A war of words over deeply held beliefs erupted on the political right in the hours after a federal agent shot and killed Alex Pretti on a Minneapolis street Saturday, pitting top officials in President Donald Trump's administration against Second Amendment defenders in his electoral base. At the core of the debate is that Pretti — who was permitted to carry a gun in public in Minnesota — had a concealed firearm on his person that eyewitness videos show federal agents apparently discovering and removing during the altercation that led to his death. Videos do not appear to show Pretti holding the weapon during that confrontation...