There is no constitutional argument against the things that the Parkland students are asking for or the laws passed in Illinois or Massachusetts. Here's Justice Scalia's
Heller decision:
Scalia wrote:2. Like most rights, the Second Amendment right is not unlimited. It is not a right to keep and carry any weapon whatsoever in any manner whatsoever and for whatever purpose: For example, concealed weapons prohibitions have been upheld under the Amendment or state analogues. The Court’s opinion should not be taken to cast doubt on longstanding prohibitions on the possession of firearms by felons and the mentally ill, or laws forbidding the carrying of firearms in sensitive places such as schools and government buildings, or laws imposing conditions and qualifications on the commercial sale of arms. Miller’s holding that the sorts of weapons protected are those “in common use at the time” finds support in the historical tradition of prohibiting the carrying of dangerous and unusual weapons.
Scalia wrote:The District’s total ban on handgun possession in the home amounts to a prohibition on an entire class of “arms” that Americans overwhelmingly choose for the lawful purpose of self-defense. Under any of the standards of scrutiny the Court has applied to enumerated constitutional rights, this prohibition—in the place where the importance of the lawful defense of self, family, and property is most acute—would fail constitutional muster. Similarly, the requirement that any lawful firearm in the home be disassembled or bound by a trigger lock makes it impossible for citizens to use arms for the core lawful purpose of self-defense and is hence unconstitutional. Because Heller conceded at oral argument that the D. C. licensing law is permissible if it is not enforced arbitrarily and capriciously, the Court assumes that a license will satisfy his prayer for relief and does not address the licensing requirement. Assuming he is not disqualified from exercising Second Amendment rights, the District must permit Heller to register his handgun and must issue him a license to carry it in the home.
This was considered a breakthrough for the NRA at the time because it said that every citizen must be allowed to have a handgun, if he has a license and registers the gun. It clearly says that licenses and registration can be required, the kinds of guns allowed can be limited to those commonly used to defend self, family, and property, there can be limitations on felons and the mentally ill, there can be limitations on where guns can be carried, etc.
These are things that the Parkland students are asking us to consider. These things were not controversial at all 30 years ago. No Supreme Court has ever ruled against this kind of thing.
In a Democracy, we should start by looking for policies that are constitutional, likely to help, and have public support. Graphs like this are helpful for identifying such policies:
Most of these policies basically acknowledge that guns are potentially dangerous and can kill people. Cars require licenses and registration for just that reason, and there are restrictions on the cars you can buy.
Is it biblical? Is it Christlike? Is it loving? Is it true? How can I find out?