Perhaps do some research? A key takeaway of the Mueller report was that there was no collusion between Russia and the Trump campaign. I mean, here's a New York Times article, which as everyone knows, is not fond of Trump and does not hold punches: https://www.nytimes.com/2019/03/24/us/politics/mueller-repor...

Mueller did not exonerate Trump on the obstruction of justice charges, but that's not what this thread is about, we're talking about Russia.

That is not a key takeaway of the report, which found about 140 contacts between the Trump campaign and Russian operatives.

Mueller repeatedly and specifically said he was not investigating Trump on any criminal charges since he was bound by the opinion of the DOJ that a sitting President cannot be indicted and therefore there were no charges that could be pursued, even if Trump shot someone live on TV.

That was regarding the obstruction of justice charge.

The New York Times article headline itself said "Mueller Finds No Trump-Russia Conspiracy". This is not some fringe conspiracy theory here. Don't get your news from Reddit.

Is it fair to assassinate someone's character by suggesting to millions of people that this someone is a criminal when they have not been found guilty in the court of law?

Like inciting crowds to chant "Lock her up!"?

Yes.