The 'burden of proof' is on the plaintiff, since the defendant is presumed innocent until proven guilty. [=the plaintiff must prove that the defendant is guilty]
The 'tax burden' has been falling increasingly on the middle class. [=middle class people have been paying a greater portion of taxes]
For the rest of his life he 'was burdened' with the knowledge that he had done nothing to help them.
(..) And a raise. Okay. All right. Are we done? The kid should be able to grow up without the burden of tuition hanging over his head. Don't you think? Which is why you're also going to pay Nancy (..)2011 TvShow: Suits Title: Pilot Season: 1 Episode 1