For Frederick Marshall, as for most Exodusters, bulldozing was a basic, but not immediate, cause for leaving Mississippi. The immediate cause was a vivid fear of future violence, stemming from remembrance of past terrorism. The memory of bulldozing combined with the memory of slavery to produce the threat of evils to come. That threat goaded the Exodusters forward with urgency.
- P.193, Exodusters – Nell Irvin Painter, ISBN 0-393-00951-3