When and how did the Bronx become dangerous?

The Bronx began to experience significant decline and increased danger in the 1970s, primarily due to economic downturns, disinvestment, and the rise of crime. Factors such as the loss of manufacturing jobs, rampant arson, and the crack cocaine epidemic contributed to urban decay and increased violence. The combination of poverty, inadequate housing, and social disintegration created an environment where crime flourished. Efforts to revitalize the area began in the 1980s and 1990s, gradually improving safety and quality of life.