Rejoicing over someone else's misfortune

is something that puzzles me. 
Yesterday my news feed was crowded with people saying how pleased they were that someone had lost his job - because he was unwittingly in breach of sec 44 of the Downunder Constitution which bars "dual citizens" from being members of the Federal Parliament.
He may well get his job back at the by-election. I hope he does. I don't know the man or have any particular feelings about him one way or another but knocking a man when he is down is one of those things you just don't do  in my book.
Before the electoral boundaries changed my local MP was a man who betrayed the electorate. Many people are still very, very angry about that - and rightly so. I would certainly not have voted for him at the next election and, if he stands again, he is likely to be  humiliated by the low number voting for him. However I might feel about that I won't go out into the streets crowing about his demise.
When I said this to someone recently they asked me, "Well, how would you feel if someone like Mugabe or Kim Jong Un was assassinated? Wouldn't they have it coming to them?"
My answer was, "I still won't go dancing in the streets."
When those two men die, and when others like them die, then I simply hope for a change for the better. I am also realistic enough to know that there might be a great deal of unrest that will endanger the lives of many people. The transfer of that sort of power rarely comes easily.
But it is still no excuse to rejoice in the misfortune of someone else. It is no excuse to rejoice because someone else's child has been caught up in the laws of, to them, a foreign country. 
The gleeful response by so many, including some media commentators, suggests there is something very wrong with our society. Our ability to "post" something on social media has made it too easy to mock someone else. 
I am fairly certain someone I know will read this and say "But you did that the other day."
No, I didn't. I was not rejoicing over anyone's demise. I was simply wondering at the demands and reaction of people who choose not to participate but still criticise. That is what is happening here. 
To all those rejoicing in the fact that someone else has lost his job I ask, "How would you feel if this was you and people were saying such things?"
Isn't it time for a little empathy?