If the article at this link is correct, Grosskreutz just completely blew the prosecutions case. Not only did he admit his hand held a gun, but he testified that he was headed over to try to "protect" Rittenhouse because Huber was attacking him. Grosskreutz said he was afraid Rittenhouse was going to be badly beat up and injured. He justified self-defense against two of the three attackers.
He also just convinced any fence sitters that the ACLU should be abolished. He was at the protests working for them. The ACLU is a lot like the FBI to me. A long time ago, I thought they were in general doing a decent and important job and were just getting it wrong in a few rare cases. Then I became more irritated at their refusal to recognize all rights of everyone and they were taking a much more liberal political slant. Now I am convinced they have gone completely corrupt and need to be abolished. We need someone to do that job of making sure the government does not infringe on people's rights, but it must be done evenly and fighting for all rights.
Of course, there is Grosskreutz's credibility problem. I have trouble believing any thing he says.