I'm not making any comment about the justness or unjustness of the underlying cause of the protests
> The police cannot simply allow it to occur so they will react with the amount of force needed to end it swiftly.
This statement, however, is simply bullshit, and the US has literally hundreds of years of examples of how civil disobedience can be dealt with reasonably and humanely (of course as well as other examples where it's dealt with viciously). The protest would have eventually died down (an effective strategy to dealing with these kinds of protests is just to cordon them off and wait it out, they'll eventually need food and water), protestors would have been arrested and cited with an appropriate misdemeanor.