Melnea Cass Boulevard

Residents, families and business owners expressed concerns during a Boston City Council meeting last week about what they say is an increase in drug activity in their neighborhoods.

Collin Knight lifted a heap of trash on a filthy lot in Roxbury and dumped it into a trash bag. For the past few months, Knight, who launches tours from the Melnea Cass Boulevard lot, has been cleaning up the parcel, which has become a dumping ground for empty wrappers, broken bottles and empty food containers.