There are many synonyms that can be used to describe a "ruthless clearance populace". Some options include "brutal displacement of residents", "merciless eviction of citizens", "harsh removal of locals", or "unrelenting expulsion of inhabitants". These phrases all convey a sense of forceful or violent actions being taken against a group of people, often in the context of urban development or public policy. Depending on the context, other synonyms to describe this type of clearance might include terms like "draconian relocation efforts" or "oppressive urban planning measures", each suggesting a level of severity or injustice that can be associated with such actions.