Like other northeastern cities suffering from the effects of post-World War II industrial decline, Lawrence has often made efforts at revitalization, some of them controversial. For example, half of the enormous Wood Mill, powered by the Great Stone Dam and once the largest mills in the world, was knocked down in the 1950s. The Lawrence Redevelopment Authority and city officials utilized eminent domain for a perceived public benefit, via a top-down approach, to revitalize the city throughout the 1960s. Known first as urban redevelopment, and then urban renewal, Lawrence's local government's actions towards vulnerable immigrant and poor communities, contained an undercurrent of gentrification which lies beneath the goals to revitalize Lawrence. There was a clash of differing ideals and perceptions of blight, growth, and what constituted a desirable community. Ultimately the discussion left out those members of the community who would be directly impacted by urban redevelopment.