Freixo meant that about Bolsonarismo, not the right. Which is a sentiment I agree.
Your claim about Alexandre de Moraes is conspiracy theory, there's no serious reason to believe he's involved on Zavascki's death.
Yeah, Bolsonaro was stabbed by a nutjob, and STF's ministers and family constantly receive threats from people online. Both affirmations are true, although that's not the reason for the censoring in question.
I completely agree STF went to far in this matter and it's worrying that they're starting to feel comfortable censoring speech. But nothing you said related to it. It feels like you're trying to imply "see, it's the left that's actually violent", which is not only unfaithful to the general public discourse in Brazil but also contributes to polarization without adding nothing to the discussion in hand.