If you are waiting to make a non-protected left turn, when all oncoming traffic is clear, you may turn. When the light turns yellow, and then red, and all oncoming traffic has stopped, you should definitely turn. What you should not do is sit there like a bump on a log.
In this instance, I was in the outer of the dual turn lanes. I had no difficulty getting around. The people in the inner turn lane were completely blocked by this genius and had to wait and then move into the outer lane. A few of them didn’t make it, but their sacrifice will not be forgotten.