This is ridiculous. At the time of me posting this 'felipepiresx' has 19 out of 49 comments in this thread.
It is a human right to speak freely, but it's not requisite that anyone provide a forum. While it's not perfect, HN does a pretty good job of supporting well-reasoned and factually-backed dissent.
Support arguments with compelling evidence, and you'll quickly find supporters. You're being downvoted and flagged for attempting to dominate the conversation.
Freedom of speech only works for people like you ?