It appears that it never occurred to G&M editors the Mr Browder is probably lying. Just because everyone screamed "political trial" does not mean he was not guilty of what he was accused. It is also probable that both sides are the bad guys.

Even a fierce Putin critic Andrey Nekrasov changed he tune when confronted with the facts and Browder has repeatedly threatened to sue theatres who were planning to show his movie "The Magnitsky Act. Behind the Scenes"

http://www.imdb.com/title/tt6028446/plotsummary?ref_=tt_ov_pl

It is known that both Browder and Russia were trying to convince Magnitsky to testify against the other. Then Browder wanted Magnitsky to be the "Oswald" for the crimes of Hermitage Capital.