How do you define "valuable"?
I think that every message transmitted by individual members of a society is valuable because it says something about specific segments of society. Even toddlers' body language can tell a whole story about their parents, environment, education, and relationship with the world around them.
The protesters on campuses are telling me a valuable truth: education in the US has become a weapon in the hands of your enemies. Listen to what college kids say to understand how your children are brainwashed to the tune of hundreds of thousands of dollars from your pockets. Your college kids are telling me to look deeper into the finer details of campus life - their teachers, courses, organizations, sources of funding, and of course outside influences that go so far and deep that protesting students aren't deterred even by the "death to America" leaflets on campuses.
I'd call this a valuable message.