METHADONE MILE — In Mayor Michelle Wu’s Boston, the walk to school means passing slumped bodies on the sidewalk, needles on the curb, and addicts openly injecting on front stoops. City Hall calls it a “public health approach.”

On Monday night, Boston Police, State Police, and the FBI carried out a vice sweep at Mass and Cass, arresting 13 people on charges ranging from sexual conduct for a fee to drug possession and resisting arrest. The operation also netted suspects wanted on multiple outstanding warrants, some for violent offenses.

The “proactive enforcement” focused on Massachusetts Avenue and Melnea Cass Boulevard, the epicenter of the city’s opioid crisis, and extended into nearby Allerton and Pompeii Streets — where dealers work in daylight and the same faces cycle in and out of the system with little consequence.

While Wu focuses on climate change, residents say the real crisis is here — in the needles littering sidewalks, the human trafficking, the constant stream of out-of-town offenders, and the addicts using public steps as personal injection sites.

The Bust List

• Eliphete Pierre, 33, Brockton — Sexual conduct for a fee
• Adam C. Evans, 46, Brockton — Possession of Class B substance
• Ralph Milord, 30, Stoughton — Warrant buffet: disorderly conduct, disturbing the peace, resisting arrest, interfering with police, withholding evidence, assault & battery with a dangerous weapon
• Nathan McGuire, 48, Boston — Sexual conduct for a fee; warrant for motor vehicle violations
• Donell P. Bernard, 38, Brockton — Sexual conduct for a fee
• Stephen C. Leong, 40, Marshfield — Sexual conduct for a fee
• Jamal Pryor, 49, Boston — Sexual conduct for a fee
• Rey F. Becceril, 47, Brockton — Sexual conduct for a fee
• Christifier C. Littlewood, 43, Winchendon — Sexual conduct for a fee
• Cristian Brito-Delahera, 26, Melrose — Sexual conduct for a fee
• Obdulio Perez Ixcot, 44, Everett — Sexual conduct for a fee
• Mohamed A. Mahgoub, 31, Boston — Sexual conduct for a fee
• Gedenilson C. Ribeiro, 40, Everett — Sexual conduct for a fee; resisting arrest

For years, Wu’s Mass and Cass strategy has leaned on free needles, crackpipe kits, and an open-air drug market operating without consequence. At City Hall, one insider described Councilor Sharon Durkan as “Wu’s political puppet” after she singlehandedly blocked an emergency proposal to declare the area a public health crisis — a move that ensured nothing would change.

Parents walking their kids to nearby schools pass dealers working the sidewalk and addicts collapsed on stoops. Neighbors describe the daily routine: avoid the needles, step around the bodies, keep moving.

Monday’s sweep cleared a handful of people for a handful of hours. By sunrise, the same corners were busy again — business as usual in Wu’s Boston.