If the argument the right wants to maintain is gun rights are more important than gun deaths. That is fine. But then we should not be surprised when there are school shootings and various massacres with guns. Since we have agreed that this is an acceptable cost to having freedom when it comes to guns.
The left argument (or people on the left that are sensible about gun rights) would say that we need some restrictions (that are constitutional) to lower gun deaths.
The right disagrees, or disagrees on what is acceptable... so we keep having this fight, and nothing gets done.