Michael Moore has basically been making the same politically charged documentaries for three decades now, and back in '02 he delivered his most prominent work in 'Bowling for Columbine.'
While a whole generation is growing up with "Netflix documentary" as a genre, docs are cleaning up at the box office, too. According to The Numbers, documentaries grossed a total of $95 million domestically in 2018, more than doubling last year's total of $44 million. A big factor in that is that there were a lot of really great documentary films this year.