Kyle Rittenouse Trial on TV

 What I see on TV is bad, bad, bad.  Kyle Rittenhouse, a teenager, 17 years back than, 18 now was at the Kinosha riot.  Wound up shooting three rioters with his AR-15.  He is on trial for murder.  He is naturally claiming self defense.  To me, the prosecution wants to be proving that Kyle shot three innocent bystanders.  Instead the prosecutors have been talking about Kyle obtaining the rifle when state law requires you to be 18 to buy a rifle, (a misdemeanor, where as murder is far more serious).  And a discussion about bullets, full metal jacket versus soft nose bullets.  To which the proper answer (which Kyle did not think of) is "all bullets are deadly", rather than a gun magazine discussion of the merits of various bullet types.  And today a long discussion about video imaging techniques, what happens when a video image is enlarged.  To which the proper answer (which was NOT giver) is "Video imaging technology changes, a lot, from month to month and I have no idea what technology was used on this particular image.