Oklahoma city bombing victims honored in anniversary service / Bill Clinton urges unity in speech on 30th anniversary of Oklahoma City bombing / Clinton says we 'owe' it to Oklahoma City bombing victims to 'do better' as a nation / 30 years later, a play about the Oklahoma City bombing informs the next generation / Former President Clinton returns to Oklahoma City 30 years after bombing of federal building / Oklahoma City bombing survivors reflect on tragedy 30 years later in new doc / A father remembers his only daughter, killed in the Oklahoma City bombing / PHOTO COLLECTION: Oklahoma City Bombing Survivors / Federal workers haunted by Oklahoma City bombing fear Trump's barbs