I wouldn't say this is "THE environmental issue" as the trailer suggests nor would it be limited to "government" nor should it be used to vilify government (what in theory is intended to serve the people), as that clearly has its own political motive. Watch critically, analytically, but with an open mind.
Mirid bugs have filled the gap created by killing other pests of cotton.Growing cotton that has been genetically modified to poison its main pest can lead to a boom in the numbers of other insects, a ten-year study in northern China has found.
In 1997, the Chinese government approved the commercial cultivation of cotton plants genetically modified to produce a toxin from the bacteria Bacillus thuringiensis (Bt) that is deadly to the bollworm Helicoverpa armigera. Outbreaks of larvae of the cotton bollworm moth in the early 1990s had hit crop yields and profits, and the pesticides used to control the bollworm damaged the environment and caused thousands of deaths from poisoning each year.