The cropped, silent video was compelling, especially for inexperienced people like my son, who got it "explained" to him by a professor. The full video fully explains to me why he was on the ground, and the conversation among the police tells me that nobody was trying to harm him.

There is an actual lawyer, Andrew Branca, who specializes in criminal law and self-defense watching the trial. Educational material here:

https://legalinsurrection.com/2021/03/andrew-branca-to-cover-derek-chauvin-trial-for-legal-insurrection/

https://legalinsurrection.com/2021/03/chauvin-pre-trial-day-2-first-three-jurors-selected/

Jury selection is in progress today.