Same Mariupol incident from another angle.
Shows someone firing a pistol shot from the crowd, after troops open up on Civilians, and the guy in blue is shot.
https://www.youtube.com/watch?v=8levXLq6fjk#t=179
Yeah. Because civis always shoot down choppers and are not able to be dislodged by military and police units.
They are illegal armed insurgents that were, by agreement, supposed to leave the govt. buildings. And they are bolstered by Russian intel, agents and special ops.