Heroin use is on the rise in the US...primarily in the suburbs, of all places.
People got hooked on the Oxy pills...put those have become more expensive. Not only has there been a clamp down on doctors who improperly prescribe them, but a gel has been added to the pills to make them impossible to crush and snort.
So the heroin is much cheaper, and gives a much quicker high than swallowing pills.
If you google any major city and add ‘heroin deaths’, you will likely see a story about a rising number of fatal overdoses.