If they want to violate the Second Amendment, then yes. Their lives should be destroyed and they should go crawl away and die somewhere.
You would want a pizza cook to be fired, and "die somewhere", simply because he didn't share your belief in the Second Amendment?
I don't see how cooking pizza, or changing or transmission, or making jewelry is dependent on either your racist beliefs or anti-gun beliefs. People should be able to make a living if there beliefs have nothing to do with their profession
Think about the number of people who do the work you depend on to live your life. There are carpenters, farmers, janitors, jewelry makers, electricians... there are hundreds of people who make your life better about which you no nothing about.
The chances are, at least one of these people has views that would offend you, whether we are talking about racism, sexism, or people who want to violate gun rights. If you are worried that the seamstress who sewed your underwear might be a racist, or want to take your guns, or a racist who wants to take your guns... just be grateful for the fact your underwear is staying together.
Live and let Live.