Actually I can do whatever I want. This is an internet comments section, not a court of law.
As for what you should or shouldn't do, please refer to https://news.ycombinator.com/newsguidelines.html - if you break these guidelines hard enough, that "shouldn't" will turn into a "can't" at some point.
Remember: freedom of speech guarantees only your talking, not anyone's listening or even amplification.
(And now we're entirely off-topic, so I'll take my leave.)