Borat made some very racist and inaccurate remarks about country (Kazakhstan) who did nothing to deserve such humiliation. As a foreigner I did not appreciate the crass of the movie at the time, but I understand completely why there is so much backlash against it. Calling something “satire” doesn’t give you a free license to be rude, especially towards other cultures who don’t share your form of self degrading humor that sometimes us in the West laugh and enjoy.
Source: My partner is Kazakh.