Without diminishing what you say, it happens in other democratic countries as well. In many Latin American universities (and even lower education) the students are a force to be reckoned with. For example, in recent years a student coalition demonstrated against the education policies of former president of Chile, Sebastián Piñera, and it was a major crisis.

Similar demonstrations can happen against, for example, the principal of a university or school in other countries. The students protest even when they risk being expelled.

The US seems mild in comparison...