When you are innocent, you can ONLY see innocence. When you are guilty, you can ONLY see guilt.
IF you think that you therefore can objectively, unbiased, clearly discern, "whether or not" your brother is innocent or guilty, you are severely mistaken.
You cannot put your own guilt on a shelf in order to see your brother's innocence, nor can you see his guilt when you are innocent.
You literally see the content of your own mind projected outward. If you are have guilt in your mind you WILL find your brother guilty and MUST judge him to be so. Yet when your mind is healed, suddenly you no longer see the guilt in your brother, it is not there, and never really was there. It was yours.
"You but accuse your brother of your own sins." This is also why when you are having an angry crappy day you think everyone else is unhappy also, only to find that when you cheer up, it suddenly seems like everyone else wasn't even unhappy.
So the ego has given us this kind of fictional claim that we actually can be "neutral" or an objective observer who can discern right from wrong, good from bad, and make valid educated judgement calls, based on what something is or is not or appears to be. But the truth is, such an "ability" is 100% impossible. You simply are incapable of this kind of "discernment" or judgement or selectivity.
You simply cannot sit on a fence and observe passively and say, yes, I see that this person is guilty and their guilt has nothing to do with me. That's a lie. If you see guilt, you are guilty.
It is the ego that says you can "get away with" one thing applying to your brother that does NOT apply to you. That is nothing less than getting away with murder. If you can cause something and escape the consequences, while your brother suffers the consequences for you, that is murderous. Everything about the ego is murderous. And it is also in denial because it's literally impossible to "really murder", just as much as it is literally impossible to "judge correctly".
Since it is IMPOSSIBLE for you to truly tell whether you brother is guilty or not, and you can ONLY see what you believe is TRUE OF BOTH OF YOU (this is the Golden rule), you really have to find a way to stop judging that "them and not me" are wrong. It makes you think that you are not included in the guilt or have escaped the guilt, but this is DENIAL and projection. You actually are still seeing yourself as guilty, but now indirectly through others.
That's what the whole ego is based on. "Me or them" "Them or me" but not both. In the thought system of Holiness, whatever applies to you applies to your brother equally because you are equals at all times. If they are guilty, so you are you. If they are innocent, so are you.
You are effectively BLIND to "whether or not" your brother is one thing or another. ALL that you can find to be TRUE of him is that he MUST be innocent, because the only way for you to BE IN THE TRUTH, is for YOU to be innocent (whole, loving), and this will make it IMPOSSIBLE for you to see guilt in your brother.
You and your brother are innocent. This is the only true judgement. And this is why the Holy Spirit ALWAYS finds both of you to be innocent forever.