It's not just about one kid getting away with murder
It's about the whole support system behind him. The former guy who created the atmosphere of hate, the manufacturer who put a weapon of war in his hands, the NRA and all their supporters that cleared the way for a 17 year old to use it, his mother who drove him there across state lines, his friend who bought the AR15 for him, the cops who cheered him on before, during, and after, and the judge whose thumb on the scale ensured injustice would prevail once again. And finally the jury who had no justice in their heart; only cowardice.
And it's about injustice for 3 heroes who put their lives on the line to try to stop an active shooter who killed 2: Hero Anthony and Hero Joseph, and wounded a 3rd, Hero Gaige.
https://www.bbc.com/news/live/world-us-canada-59337963