Second Amendment.
Next question.
The right to keep and bear arms is an unalienable right. Smoking dope and shooting methamphetamine are not.
The right to keep and bear arms is essential to personal and national security and self-defense. Smoking dope and shooting methampetamine are utterly devoid of any virtue outside of getting a user stoned so he can act like an ass (or, as in this case, beat a 12 year-old boy nearly to death).
In short, there is essential and transcendent virtue in the Second Amendment that justifies denying power to government to prohibit personal ownership of guns despite the fact that some citizens will misuse guns.
There is no essential virtue in dope and meth use. They are useful only to advance George Soros's "doper-victim" nanny government socialist agenda.