What kind of mental illness caused him to attack just the holocaust memorial?
What has the memorial to do with his dead father?
What was said in this verbal argument?
More questions than answers...
I think he should be charged with a hate crime and be required to pay restitution (however long it takes him) to the Holocaust memorial, for damages he caused, regardless of his personal problems.
Unfortunately, he was not charged with a hate crime, and will likely get off with little punishment.