Community building is a field of practices directed toward the creation or enhancement of community among individuals within a regional area or with a common interest. It is sometimes encompassed under the field of community development. A wide variety of practices can be utilized for community building, ranging from simple events like potlucks and small book clubs, to larger–scale efforts such as mass festivals and building construction projects that involve local participants rather than outside contractors. Activists engaged in community building efforts in industrialized nations see the apparent loss of community in these societies as a key cause of social disintegration and the emergence of many harmful behaviors. They may see building community as a means to increase social justice, individual well-being and reduce negative impacts of otherwise disconnected individuals.