No irony here: I legitimately do not know how. Citizens are not allowed to vote directly on gun control, our reps are against it or ineffectual, the Supreme Court is in no way beholden to the public, and extremely harsh penalties were just passed for protesting them directly.
Biden, in a statement on the Supreme Court guns decision sent to reporters by email: "I call on Americans across the country to make their voices heard on gun safety. Lives are on the line."