Were lucky? I guarantee you they would much rather have had to deal with sound cannons than the batons, dogs, and fire hoses that they did have to deal with.
don't think so, batons/dogs/hoses put their struggle into a visual perspective, you see a cop whaling on someone you'll start asking if the reason they are doing it is justified.
You see someone running away from a sound cannon, you just shrug it off since you aren't experiencing it yourself
You see someone running away from a sound cannon, you just shrug it off since you aren't experiencing it yourself