Determine the central idea of this article
The article is discussing the effects of gentrification and the displacement of low-income communities in urban cities
The main topic of this article is the consequences of gentrification in urban areas, including the displacement of low-income populations.
Complete the following task based on the instruction and optional input provided.### Instruction:
Determine the central idea of this article

### Input:
The article is discussing the effects of gentrification and the displacement of low-income communities in urban cities

### Output:
The main topic of this article is the consequences of gentrification in urban areas, including the displacement of low-income populations.