Having a hard time thinking of a social issue for your project? Your topic can be anything that interests you about the social world! It's probably best if it is sufficiently broad to find a good number of sources, but also sufficiently narrow that you can focus in on evidence without getting overwhelmed.
Here are a few broad areas of social issues that you may consider as project topics:
Human trafficking (see, e.g. this City and County of SF report)
Immigration
Healthcare (many topics within this: universal healthcare; the opioid epidemic)
The criminal justice system
Technology (e.g., algorithmic bias)
Housing / gentrification / homelessness
Wealth inequality
Food/nutritional inequality
Inequality in political participation
Eviction rates or housing affordability, including racial and class inequality
Access to jobs in urban areas
If you already have an idea, but it might be a little too broad, you can narrow it in a few ways. Focus on:
a particular subpopulation (for example, rather than investigating poverty, think about studying childhood poverty).
a particular geographic location (for example, instead of looking at homelessness generally, think about studying homelessness in San Jose).
a point in time (for example, rather than looking at the entire debate about immigration, you could consider focusing on how immigration debates have evolved in the 2 years)