The crowded theater example keeps coming up but it’s thoroughly unfitting. By analogy, one would ban words in the off chance someone will use them maliciously or even carelessly in public, and yes, that would indeed violate the first amendment as it is explicitly written to prevent it. For example, I abhor the historical horrors of socialism but I’ll defend to the end Bernie and Bro’s espousal of it, as the unintended consequences of removing his right to exercise that constitutional liberty is a more present authoritarian threat than the ultimate authoritarian outcome his ideas could bring.
Similarly, the liberty implications and unintended consequences of most gun control proposals cannot simply be waved aside
By the way, abortion isn’t explicitly canonized in the Constitution or the BoR, so that analogy doesn’t work either.