The 2nd Amend. exists as a function of our constitutional government. While you may not like it, people have the right to use the appropriate governmental and legislative processes to alter it.
That is not being an enemy of the people.
Much of the country did not like the view that the 2nd was an individual right. They called those of us who did, all kinds of names - we could be seen as enemies of the people as we promote violence.
Last, if you use a term which riles up the choir, you feel good. If you think you will take the gloves off and convince your opponents or the uncommitted of your causes with extreme names, you are wrong.