On June 13, 2006, Hannah was arrested, along with actor Taran Noah Smith, for her involvement with over 350 farmers, their families and supporters, confronting authorities trying to bulldoze the largest urban farm in the U.S., located in South Central Los Angeles. She chained herself to a walnut tree at the South Central Farm for three weeks to protest against the farmers' eviction by the property's new owner, Ralph Horowitz. The farm had been established in the wake of the 1992 L.A. riots to allow people in the city to grow food for themselves. However, Horowitz, who had paid $5 million for it, sought to evict the farmers to build a warehouse. He had asked for $16 million to sell it but turned down the offer when the activists raised that amount after the established deadline. Hannah was interviewed via cell phone shortly before she was arrested, along with 44 other protesters, and said that she and the others are doing the "morally right thing". She spent some time in jail.