“Since that election, local politicians have followed national politicians’ lead by using social media as an inexpensive and effective way to campaign. But Facebook has a dark side, allowing users to disguise their true identities to lodge attacks without accountability against opposing candidates and spread misinformation rapidly.”

A case study in social media and local politics, by the Victoria (Texas) Advocate:

https://www.victoriaadvocate.com/news/2017/oct/28/shady-social-media-practices-change-local-politics