On Tuesday — you may have missed this because of some political developments that day — the Supreme Court heard oral arguments in Schwarzenegger v. Entertainment Merchants Association. This case is a First Amendment challenge to a California law that prohibits selling violent video games to minors.

Cato had filed a brief pointing out that, to paraphrase the Four Tops, it’s just the same ol’ song, but with a different meaning whenever a new form of entertainment comes along. In other words, it is difficult to find any form of entertainment that did not once suffer the ire of parents’ groups, smoldering church bonfires, and would-be government protectors of children. From the Brothers Grimm, to “penny dreadful” novels, to comic books, to movies, to video games, each new entertainment medium was said to achieve innovative levels of mind control that corrupted children with flashing pictures, bright colors, or suggestive mental imagery.

And it seems like the justices were listening.

Throughout a lively oral argument that primarily dealt with the vagueness of trying to define a “violent video game,” justices and counsel consistently discussed the rogues gallery of past entertainment industries that were said to corrupt our children. At one point Justice Scalia asked California’s attorney what “deviant violence” is, to which the attorney responded, “deviant would be departing from established norms.” Scalia asked incredulously, “There are established norms of violence?” The attorney began to say “Well, if we look back…” before Scalia cut him off with, “Some of the Grimm’s fairy tales are quite grim, to tell you the truth.” When California’s attorney said he would not advocate banning Grimm’s fairy tales, Justice Ginsburg came back, asking, “What’s the difference?…[I]f you are supposing a category of violent materials dangerous to children, then how do you cut it off at video games? What about films? What about comic books? Grimm’s fairy tales?”

Later in the argument, Paul Smith, attorney for the Entertainment Merchants Association, referenced Cato’s argument: “We do have a new medium here, Your Honor, but we have a history in this country of new mediums coming along and people vastly overreacting to them, thinking the sky is falling, our children are all going to be turned into criminals.”

Granted, these arguments could have been raised even without Cato’s brief, but exchanges like these demonstrate the value of amicus briefs. Along with novel legal arguments, they can supply the Court with historical, statistical, sociological, and other information that is relevant to deciding the case.

You can read the argument transcript here and the audio will be available tomorrow at this site. Thanks to Cato legal associate Trevor Burrus for his continuing work on this case (including with this blogpost).