In the Aftermath of Sandri

In November of 2007, laziale Gabriele Sandri was shot and killed by a police officer, on route to Lazio's away game in Milano several hours later. He died in the back seat of the car he and his friends were travelling in, shot through the neck.
Because I could hardly tell the story any better than she, I recommend visiting Spangly Princess if you need reminding of the story. Specifically of interest are these posts: this one, breaking the news; this one, speculating with a day's hindsight on potential outcomes; and this one, establishing the police officer had been charged with murder.

The verdict came this evening: Luigi Spaccarotella was found guilty of manslaughter (
omicidio colposo), and sentenced to six years in prison. There was outcry in the court after the sentence had been delivered, Gabriele Sandri's father reportedly declaring it shameful for Italy that such a light punishment be handed out.

Quite how manslaughter - indicating a lack of intent and/or premeditation - was established after
Spaccarotella had ran for hundreds of meters with his weapon drawn, and later fired said weapon over four lanes of high speed traffic on one of the country's busiest highways I am not quite sure, but then my legal expertise can, and should, be put into question. Rather: as someone not aided or comforted whatsoever by a longer sentence, I would just like to understand more properly. If it had been reversed, for example, if it were Sandri or one of his friends killing Spaccarotella in identical circumstances, does anyone honestly believe the full fury of the anti-ultrà movement would not have come down when handing out sentences? That's a dishonest rhetorical question, by the way, one I'd rather no one try to answer or take too seriously: both because such comparisons are usually meaningless, and the fact that Sandri was not what the media or populist politicians mean when they're whispering the word ultra under their breath with venom. He was just a DJ who liked to go to away games. That's it.