Tracing origin and impact of local social media misinformation on infrastructure.

[Nathan_M]

I'm researching how localized misinformation campaigns on social media are impacting public perception of a specific infrastructure project in my region. While the broad national discourse is covered, I'm seeing hyper-local groups and pages spreading fabricated narratives that are influencing community meetings and local media coverage. For researchers or journalists focused on disinformation, what methodologies are most effective for tracing the origin and amplification of these micro-targeted falsehoods, and how do you measure their tangible impact on offline public opinion and decision-making?