20th-century-cities active-transportation activism american-cities architectural-criticism architectural-critique architectural-design architectural-heritage architectural-history architectural-theory architecture cities citizen-activism citizen-engagement citizen-participation city city-activism city-aesthetics city-architecture city-building city-culture city-decay city-design city-development city-diversity city-dwellers city-dynamics city-economics city-economies city-economy city-governance city-government city-grids city-growth city-history city-infrastructure city-life city-livability city-living city-management city-neighborhood city-neighborhoods city-parks city-planning city-policies city-politics city-problems city-recidivism city-redevelopment city-resilience city-revitalization city-sprawl city-streets city-traffic city-transportation city-vibrancy cityplanning cityscape civic-engagement communities community community-activism community-building community-development community-dynamics community-engagement community-involvement community-life community-organizing community-planning crime-prevention cultural-diversity death decay density diversity diversity-in-cities downtown-revitalization dynamics economic-development economic-diversity economic-revitalization economic-vitality economics economy environmental-planning environmental-sustainability gentrification governance grassroots grassroots-activism grassroots-movements great-american-cities green-spaces historic-preservation historical-analysis historical-perspective historical-preservation historical-urbanism history housing housing-policy human-scale infrastructure jacobs jane jane-jacobs life local-economy metropolitan-areas metropolitan-development mixed-use mixed-use-development mixed-use-neighborhoods mixed-use-urbanism neighborhood neighborhood-activism neighborhood-culture neighborhood-development neighborhood-diversity neighborhood-dynamics neighborhood-life neighborhood-preservation neighborhood-revitalization neighborhood-safety neighborhood-theory neighborhood-vitality neighborhoods neighbourhood neighbourhoods new-urbanism new-york-city participatory-design pedestrian-culture pedestrian-friendly pedestrian-friendly-cities pedestrians placemaking politicalscience preservation public-art public-housing public-participation public-policy public-safety public-space public-spaces public-transport public-transportation publicpolicy racial-segregation regeneration regionalstudies research researchmethods residential-segregation revitalization scalability sidewalks skyscrapers social-activism social-analysis social-capital social-change social-cohesion social-commentary social-development social-diversity social-dynamics social-economics social-fabric social-geography social-inequality social-infrastructure social-interaction social-interactions social-issues social-justice social-networks social-science social-sciences social-structure social-sustainability socialsciences socioeconomic-diversity sociological-analysis sociological-study sociology statistics street-life street-safety streets suburbia sustainability sustainable-cities sustainable-development technology the-built-environment the-death-and-life-of-great-american-cities tourism transportation transportation-planning transportation-policy transportation-systems unitedstates urban urban-activism urban-anthropology urban-architecture urban-challenges urban-communities urban-community urban-culture urban-decay urban-decline urban-density urban-design urban-development urban-diversity urban-dynamics urban-ecology urban-economics urban-economies urban-economy urban-environment urban-environments urban-evolution urban-fabric urban-geography urban-governance urban-growth urban-history urban-inequality urban-infrastructure urban-issues urban-landscape urban-landscapes urban-leadership urban-life urban-livability urban-living urban-neighborhood urban-neighborhood-dynamics urban-neighborhoods urban-observations urban-observer urban-planning urban-policy urban-politics urban-poverty urban-problems urban-psychology urban-redevelopment urban-regeneration urban-renewal urban-resilience urban-revitalization urban-social-issues urban-societ urban-sociology urban-spaces urban-sprawl urban-sprawl. urban-streets urban-studies urban-sustainability urban-systems urban-theory urban-transportation urban-vibrancy urban-vitality urbandevelopment urbanism urbanism-theory urbanization urbanization-trends urbanpolicy urbanrenewal urbansociology vibrant-cities vibrant-communities vibrant-neighborhoods vitality walkability walkable-cities walking zoning zoning-laws zoning-regulations