... there will be fewer bleeding-hearts in the world and a slightly higher clue factor. But that day is (apparently) not today.
FACT: It is physiologically impossible to temporarily disable a person without the risk of permanent damage. Even a humble water cannon or smoke bomb can potentially kill someone who already has a heart condition. At some point, rioters have to take the consequences of their actions!
FACT: Any government which tries hard enough (that excludes NONE so far) will eventually get hold of the weapons it wants. This has been the case throughout recorded history. Why act all surprised? Get a grip.
Grenade because it's cool.