I disagree. The shooter’s victims fell to a random act of violence. (As in the victims were randomly selected. The shooter didn’t randomly occur.)
It is tragic. But it was a crime committed by one man, now dead, who targeted the innocent.
The tipster is more than innocent. He is a hero. His eviction is not a random act of cruelty, but a result of his heroism. And his assailants aren’t a monster, whom we don’t expect to strive for goodness, but us.