Why did he? Well.. from what I understand, it was his way of saying "HERE MEDIA! YOU WANTED TO SEE HIM! HERE HE IS!" Honestly, in my opinion, the man was having a mental breakdown at the time.
He was trying to show the people his new child. He was not trying to hurt or harm the baby, only just show him to the world for a brief moment. that was all. Hope I helped :)
Yes, he dangled his 9 month old son Prince out of a 5th floor window. This incredibly reckless act horrified and shocked everyone.
Who's to say, but it's just another long-line of bizarre behavior that marred and tarnished his reputation.