For the people downvoting this post, consider that people have been shot in the US for complying with police orders, including literally lying on the ground with arms up [1], for simply possessing a firearm with hands well away from it [2], and for attempting to comply with police orders to crawl across the floor with legs crossed and arms up (yes, really) [3]. Getting immediately shot for putting a hand in a pocket is an entirely realistic possibility.

[1]: https://en.wikipedia.org/wiki/Shooting_of_Charles_Kinsey

[2]: https://en.wikipedia.org/wiki/Shooting_of_Philando_Castile

[3]: https://en.wikipedia.org/wiki/Shooting_of_Daniel_Shaver