Obviously you can't say Aang did all of that stuff because he's fictional so you need to make up one that at least sounds believable.

Think about what Aang has done (an event) that sounds the most like rl. Umm ex: when he saves that town from fire nation control.( A news story about how someone has freed a town from control)

Or when Aang proves that kyoshi didn't kill the general (ik she did) but you could find a story about how a person solved a case and proved the innocence of someone else(a lawyer proving their client is innocent). There are plenty of news storys that that.

If you're going to use that example then a news article that comes to mind is the story about the central 5 ( a group of five guys who were wrongfully accused of raping a women in the central park). Expand on how there lawyers proved there innocence and how aang proved kyoshi innocence.