Today, the quality is improving rapidly. This is happening as groups such as Global Witness, which used to be just a campaign group but now blurs the boundaries of modern journalism (in a good way), become more high profile and recognised for their important work.
Documentary makers related to the environmental movement side too, are raising their game. They are gaining more awards, making better movies and generally showing the complexities of globalised business and governance challenges in a way you didn’t see so much a few years ago.
Virunga, about mining in a nature reserve in the DRC in Africa is a good example.
It’s a multiple award winner and is just out on Netflix, it’s well worth a look.