Sure, let's go through a few of them individually:
Would it have been appropriate to shoot:
David Nicholas Dempsey: stomping on police officers' heads, using flagpoles and other objects to attack officers, and spraying bear spray into the gas mask of an officer
Daniel Joseph "DJ" Rodriguez: shot Officer Michael Fanone, who had been dragged into the mob by another assailant and was lying face-down on the ground, twice with a stun gun held to his neck. Attacked other officers with a wooden pole
Christopher Joseph Quaglin: choking and tackling officer Michael Fanone to the ground, attacking other officers with metal bike racks, stolen police shields, and pepper spray
Thomas Webster: attacking an officer with a flagpole and tackling him
Thomas Harlen Smith: among other violent actions, kicking an officer in the back and knocking him to the ground and hitting two officers in the head with the metal pole he threw at them
Albaquerque Cosper Head: dragging officer Fanone face-down down the West Terrace steps and attacking police
Steven Cappuccio: ripping off officer Hodges's gas mask and striking him across the face with his own baton