RT Article T1 Community and the crime decline: The causal effect of local nonprofits on violent crime JF American sociological review VO 82 IS 6 SP 1214 OP 1240 A1 Sharkey, Patrick A2 Takyar, Delaram A2 Torrats-Espinosa, Gerard LA English YR 2017 UL https://krimdok.uni-tuebingen.de/Record/191248420X DO 10.1177/0003122417736289