imo, the line separating personal opinion from freedom of speech in our country is heavily blurred if not non-existent at all. This is evident in the media's exercise of its so-called freedom of speech vis-a-vis their 'freedom of the press'. that even though they would end up compromising someone or something, be it a crucial government operation or plainly someone else's life, they won't back down as long as they can delivery their news articles ahead of their competitors.
as for children being branded rebellious by their parents, i think it is caused by the parents' close mindedness. parents, or maybe even the elderly, think that since they are older, they are far more knowledgeable than the youngsters, and anything that these youngsters would say are just useless blabber. This is evident not only in households but also in all levels of society. plain old 'seniority'.
edit: and by some coincidence, found this while browsing:
so, how are we going to change it? specifically, i have no idea, but i'm sure that by globalization and other social influences, this would be changed in time.. only that along with social revolution, you can't expect that only one aspect of society would change. heck, we can't be sure if the change would even be for the better.