Well it's not right for him to do such things. Being a dick "person person" I believe shouldn't get you throw in jail, but being a dick in a place/page which is there as a tribute to some, well I can't say I give much of a toss of he is in jail. Where to draw the line I guess?
Maybe at repeat offenders.
I assume he was aware of his actions and the emotions he has caused.
As fucking up some ones emotions when they are mourning can't be good for mental health, must almost be like torture. If I had lost someone and some scum starting mocking my loss, I would probably want to splatter their guts on a wall and if they kept mocking I think it would drive me slightly insane, so yeah throw him in a cell for a while.
"Pen is mightier than the sword" if you believe that and also that a murderer deserves to go to jail then surely you think that such distasteful trolls should go in a cell for a while.
Tired and ranting, sorry if I've missed a massive flaw in my post.