The best thing you can do is brush it off. When you post things on here everyone pretty much has the right to comment on whatever they want & say whatever they want. Especially if you may be posting things about controversial topics lol. Expect very opinionated people to speak their mind & rude remarks from A-holes.

How you react is all in your control, if you say you don't need the validation of others, then why let it get to you. The world is your inner mirror reflected back at you, if you have self doubt, then they have hit a corresponding note within you.

I wouldn't worry too much about it. People love to make others feel bad