The video camera turns on while they were (likely) already told they will be arrested. They were perhaps ordered to move and did not move. The National Guard and state troopers in that particular area (< 15 miles from me) started ordering people to disperse or face arrest. I don't believe that press are exempt from this order especially when a state of emergency is declared.
Downvoters: please add comment why, or else this isn't discourse
What chaos? The scene shown in the video looks really calm, with one protester, several reporters, and a very large number of police standing around apparently doing nothing more than looking intimidating at that moment.
https://www.nytimes.com/2020/01/23/podcasts/1619-podcast.htm...
Perhaps it’s naïve of me to think people will want to learn about what it really means to be Black in America. But I think if you really listen to what history is saying and really listen to what Black people are experiencing right now it will change how you think about events like this.