I don't get it...

Okay, so the freak that shot everybody is pleading not guilty.
Tell me- WHY do we go through this when everyone saw he pulled the trigger. He was filmed pulling the trigger. There were witnesses that say "he pulled the trigger".
This makes absolutely no sense. The guy will sit for years on death row and this will deter NO ONE from doing something like this again.
While I totally get "Innocent until proven guilty"- how can someone be innocent when EVERYONE saw him do it?
If it's going to be "by reason of insanity" - fine, next day we say "yer nuts and yer going away forever". Instead, we will drag this out for YEARS.
I don't understand why we do this with the justice system.
Tell me- WHY do we go through this when everyone saw he pulled the trigger. He was filmed pulling the trigger. There were witnesses that say "he pulled the trigger".
This makes absolutely no sense. The guy will sit for years on death row and this will deter NO ONE from doing something like this again.
While I totally get "Innocent until proven guilty"- how can someone be innocent when EVERYONE saw him do it?
If it's going to be "by reason of insanity" - fine, next day we say "yer nuts and yer going away forever". Instead, we will drag this out for YEARS.
I don't understand why we do this with the justice system.