the word "force" is built into their job description.  law en-force-ment.  Why are we surprised when they use it?

And Trump just rolled back the ban on police departments getting truckloads of military gear they don't ever need for anything other than to intimidate citizens.  If you can't arrest someone with 10 guys armed with shotguns, tazers, and Glock 10 guns, you need to call in the army.  Not try to BE the army.