In the aftermath of the mass shooting in a Sikh gurdwara in Oak Creek, Wis., a sea of reporters have asked many Sikh leaders and activists to quantify how many Sikhs had been targeted in hate crimes and murders since Sept. 11, 2001. Although I have helped chronicle hate crimes against the Sikh American community for more than a decade, I could not tell them. Even as the White House, U.S. Department of Justice and Federal Bureau of Investigation express their commitment to protecting Sikh Americans in response to the massacre, there is one glaring problem with how the federal government monitors hate crimes against Sikhs in America: It doesn’t. The FBI tracks all hate crimes on Form 1-699, the Hate Crime Incident Report . Statistics collected on this form allow law enforcement officials to analyze trends in hate crimes and allocate resources appropriately. But under the FBI’s current tracking system, there is no category for anti-Sikh hate crimes. The religious...