did djokovic deserve to be booted out of US open?

Yes. Obviously he didn't mean to hit that lady but the rules are clear. 

Yes, obviously 

yes because he is a "teh donald" supporter mind

Heard it's not the first time he's thrown a fit. Where ball was struck against the wall and close to people. He had it coming. Imagine if he hit her eye and she went blind. I'm a fan and not defending the guy. Plus he's not banned for life. It's one tournament and yes I know it's a major. He'll take a long vacation and forget about it

yes , rules are rules and not one forced him to  hit the ball .next  time he wont do it again .

No. 

1. If the video I could find is reliable, he did not hit the ball with full strength and speed...

2. when players are serving -- full force and speed - line judges ,usually can avoid the ball...

3. I could not see -find a video what happens with her, but it seems to me that she was not focused on terrain...

4. If I had a ticket , sitting, watching...I would not like arbitrary chosen winner...

5. By the way, technology could replace line judges, right now, we have an additional reason - for their own safety.

Yes- it was an obvious and clear rule violation.  You either enforce the rules or you don't.

Yes, he did. It's not the first time he's done somrthing like that.

Yes.   The rules re hitting a ball round the court at random, and striking an unfortunate line judge are quite clear.   Djokovic (and others who have done this, unintentional or not) needs to get himself some anger management help.   And for once McEnroe is right - Djokovic will have to learn to live with his 'bad guy' reputation and stop trying to make the crowd love him.

@ Srbo Sutaric     The line-judge's attention level would have dropped at that particular point in the match, when the match wasn't in play.   No doubt she didn't expect Djokovic to belt a ball round the back of the Court so she could hardly be blamed in any of what happened.    To the TDs, there are no excuses for ignoring the rules of the game.  Which Djokovic did.

It's a sad unlucky situation, but the rules are clear.