You Can't Handle the Truth!

That line was uttered by Jack Nicholson in A Few Good Men.  The Trump family must have grown up on that movie.  It seems one of his sons is stating that his father will not release his taxes because we can't handle them.  What part can we not handle?  How he gets his money?  How rich he is and poor the rest of us are?  How he has money he could actually pay back to those he bilked money out of?  I don't know what we can not handle.  I guess they fell they have to do a Dummy book to his tax return for us peons to understand.