I grew up in a pretty poor area in CA. Many people I knew then were in gangs. Some are dead, some are paralyzed ect. Violence is a cycle.
Here is a sick sad story of a friend of mine.
Her brothers were drug dealers. House got shot at multiple times. One of her sisters was convinced at 14 to sleep with the brothers when she was 14. Mom could not care less about what is going on. My friend started dating her brothers friends at the age of 14 when the guys were all 20+. She could only date her brothers friends because they would not let her date anyone else. She got tired of her brothers and started dating a guy who was 30 when she was 17. Got married to him just so she could move out of the house. Is now split from him and is a HS dropout. No future, no hope.
Her situation is not biological, its cultural. Sad.