When anti African bigotry is okay

when is it okay to present Africans as ignorant sexually promiscuous cynics? When the PC want to bash the religion of a pious person seeking the US presidency.

From Zenit news:

The story is ostensibly about two young Mormon missionaries sent to Uganda to share their scripture. The villagers are uninterested as their lives are consumed by poverty, famine and AIDS. When the local warlord plots to mutilate the women of the village, however, the villagers decide to feign conversion so as to flee. When they go for instruction from the Mormons they encounter an especially ignorant missionary who makes up his own revelation from snippets of Star Wars and Lord of the Rings. When the ruse is discovered, all conclude that religion is better when taken as a metaphor instead of literally.

My first red flag went up with the portrayal of the Ugandans, seen as virtually illiterate, and enslaved by their sexual instincts. I don't know what a Ugandan would make of being presented as almost bestial in his desires and with a vocabulary limited to profanity. (In the show, all but one of the 75 instances of foul language are uttered by the Ugandans.)

Furthermore, the story presumes that female genital mutilation is a normal practice despite the fact that Uganda outlawed the practice in 2009, blazing the trail for other African nations. And although the plot supposes that the overwhelming majority of Ugandans are infected with the AIDS virus, Uganda has been the most successful battleground against AIDS with its "ABC" policy, of Abstinence, "Be faithful," and Condoms, with the latter seen as a last resort. Thanks to this program HIV has declined dramatically in Uganda, and between 1991 and 2007, HIV infection rates dropped by more than 50%.

Uganda's rate of Female genital mutilation is less than ten percent, and it's HIV rate is 6 percent of the adult population.
Uganda is, of course, a majority Christian land,