After Henry Louis Gates, Jr., an African-American Harvard professor, was erroneously arrested for breaking and entering, Barack Obama spoke up. The President at first overdid his criticism of the police, but in the end played the meritable role of peacemaker, inviting both Prof. Gates and the arresting policeman to the White House for a “Beer Summit.” In time, Sgt. James Crowley even gave Prof. Gates a pair of the handcuffs used on the professor. Now President Obama should help make peace in a separate Cambridge case and consider another “Beer Summit”—in fact a whole series—between copyright lobbyists and America’s librarians, educators and consumer activists. Dead in the copyright...