This is a problem every activist dealing with baised judiciary faces. And there are biases - they don't get reported because it puts a dent into our faith in this institution - but they exist. And if you see them you will forever lose faith in not only the judiciary but the other institution that does have an impact on it.
It is the media. Judiciary is obsessed with appearences. That is all they care about. A decision that looks unjust can have people revolting, and that is the failure of the institution. So they follow media like crazy celebrities.
And so you have plant articles in media that these judges read. It takes time and effort but that is how you bring change.