Deconstruction is basically taking apart some work and looking at it in a different way. For decades, tv shows and movies have been doing that when it comes to characters, tropes, situations and reality. Often it can work well. Other times, not so much.
Best deconstruction: Oliver training the newbies in Season Five of Arrow. Someone with Oliver's personality would and should suck at training others, and it showed in that storyline. Also, most of them weren't willing to listen to him, like Rene, and even easily turned on him, like Evelyn. Meanwhile, Curtis remained to this day the weakest member as he had no prior fighting skills.
Worst deconstruction: None yet. Stay tuned.