This response has nothing to do with anyone or anything being discussed in the thread. Future projections of how unnamed persons might respond to civil strife in a country which isn't hosting the Vuelta? Well, that's a response. Certainly isn't an answer.I’ll invite you to pay both broad and granular attention to responses to civil strife in the US the next few years and see if you can work out some examples.
Failing that, maybe take a closer look at some responses to the cycling protests and see if they can honestly be described as measured and understanding. See if all the police handling any such events categorically do not meet some aspect of those criteria.
Who one has or hasn’t met or experienced in life is often not the best claim to overall validity.
Not that any of what you just posted supports your presumed ability to read minds, asserting that there are some people for whom "protest is almost inherently unacceptable or incomprehensible". Again, that's an incredible claim on several levels.
I would say a great deal, if not most of the responses to the protests have been measured. I can't speak to understanding.