Answer: eloquently.
That means that he had managed to write in a well and effective manner, one capable to persuade, which sure is a motive of high satisfacton,specially for a journalist and activist.
Technically since it says in your own words, this is cheating, lets not cheat! finding the theme is simple, just ask yourself, what was the ppoint, its not asking you to summarize so dont say that this happened then this happened, nope just simply state the purpose of the article! hope i helped!
I don’t know what I am supposed to help you with. But if you ask me in the comment section below I’m sure I can help.