Again, he's a hero..and the prosecution's witness should be on trial
All the bs aside let's look at this from a LOGICAL perspective.
Rittenhouse was carrying his weapon using proper gun discipline pointing it down and finger not on the trigger.
Grosskreutz admits to not being shot until he pointed his gun at Kyle's head. Once he pointed the gun at Kyle's head Kyle was within his LEGAL right to defend himself....anyone who owns a rifle and takes a class is told you do NOT point a weapon at someone unless you plan on using it. Grosskreutz basically fucked around and found out.
Grosskreutz admits his gun didn't have a valid permit.
So Grosskreutz is walking around town without a valid permit for his weapon and not knowing proper gun safety. He could have literally killed someone other than Kyle for being a complete and utter fucktard.