[contentcards url=”https://nypost.com/2024/06/24/us-news/horrid-nyc-street-where-3-people-were-stabbed-in-broad-daylight-was-s-thole-long-before-fatal-attack-locals-say/”] WARNING: The following article contains graphic content that some viewers may find disturbing. By Desheania Andrews, Joe Marino and Matt Troutman Open-air heroin use,…