The deadly blast toppled American notions of safety, exposed anti-government rage and unified a grieving city. Its lingering impacts are mixed.

Thirty years after a truck bomb detonated outside a federal building in the nation’s heartland, deep scars still remain from the deadliest homegrown attack on U.S. soil.

The inscription above the entrance to the Oklahoma City National Memorial & Museum reads, "We come here to remember those who were killed, those who survived and those changed forever. May all who leave here know the impact of violence.