This week began the way so many do: with more tragic gun violence, as three people were killed in two shootings at Jewish centers in the Kansas City area, part of the 86 killed by guns in the U.S. every day. "We are united in our condemnation of this heinous attack," said Attorney General Holder. "These acts cannot be ignored." And yet, one year ago this month, the Senate rejected even a modest background check bill, despite the support of 90 percent of Americans. In the wake of the Kansas shootings, Michael Bloomberg's $50 million gun control effort, "Everytown for Gun Safety," unveiled its first ad. We "have another chance to stop a child from being killed," it said. We do, but only if we refuse to lower our expectations. As Gabriel García Márquez, who died on Thursday, wrote, "It is not true that people stop pursuing dreams because they grow old, they grow old because they stop pursuing dreams."