The irony is that nearly every American who's a billionaire (assuming there's not too much rent-seeking involved) has done far more for their fellow humans than anyone reposting this meme (including me!).
They have created far more billions in benefits to others than they have taken in turn.
So if you have not created as much value for others as the billionaires have, who are you to object to them? Go out and do more good instead of complaining about those who have.