As the long Minnesota winter came to an end in March 2021, both protesters and police began preparing for the beginning of tunneling work to build the Enbridge Line 3 pipeline. Intended to update the decaying previous structure and double its capacity. Police practiced a variety of crowd control tactics and countering different types of imagined threats, honing their strategies by monitoring social media.
https://theintercept.com/2021/03/23/enbridge-line-3-mississippi-minnesota-police/…