We cannot turn against one another by letting this fight be defined as a war between America and Islam. That, too, is what groups like ISIL want. ISIL does not speak for Islam. They are thugs and killers, part of a cult of death, and they account for a tiny fraction of more than a billion Muslims around the world - including millions of patriotic Muslim Americans who reject their hateful ideology. Moreover, the vast majority of terrorist victims around the world are Muslim. If we're to succeed in defeating terrorism we must enlist Muslim communities as some of our strongest allies, rather than push them away through suspicion and hate.