I think this article is overlooking the fact that a blind woman is a symbol for the justice system in our society. https://en.m.wikipedia.org/wiki/Lady_Justice.

The song is a parable for police brutality in America. What the blind woman has dropped/lost is her standards in the way they treat African-Americans. Police are supposed to protect and serve, but you can make the case that this is not true for African-Americans. It has become a stereotype that black people don't interact with police for fear that they will be abused instead of helped. Blood depicts the abuse of power that takes place when a black person tries to help.

It also makes sense that the song is about police brutality since at the end of the song we hear the fox news clip which says "Lamar stated his views on police brutality with that line in the song...". The clip goes on to quote Alright, but the news clip is placed intentionally in Blood to hint to the listener that Kendrick is stating his views on police brutality in this song. The next part of the fox news clip is "And we hate the popo, wanna kill us in the street fo' sho". This literally explains what just happened in the song. An innocent black person walking down the street trying to help police and then being killed in cold bood. But why would police want to do this?

The opening lines by Bekon are:

Is it wickedness? Is it weakness? You decide Are we gonna live or die?

This gives us a lens through which to analyze the situation. Do police commit acts of brutality out of weakness (fear) or out of wickedness (racism)? Ultimately in this case police get to decide whether we live or die. This question is answered at the end after the gunshot where we only hear "is it wickedness". This shows that Kendrick feels that the abuse occurs because of racism and not fear as it's played out in the media. How often do police get off from any sentencing because they use the excuse that they feared for their life?

However the lens of "Is it weakness? Is it wickedness" should be used to analyze everything else in the album.