“All of these show that growth in immigration populations often lead to economic revitalization, population growth in areas, low rates of vacant and abandoned buildings - that kind of vitality that we want in our cities and in our metropolitan areas,” Adelman argued.

https://www.northcountrypublicradio.org/news/story/33414/20170215/researchers-say-immigration-does-not-influence-upticks-in-crime-rate