There are at least two commandments that these "Christians" ignore with impunity:
Thou shalt not bear false witness against thy neighbor, and
Thou shalt not steal.
Those promulgating homophobia in Africa know perfectly well that they are lying, i.e., bearing false witness, since they are well aware that homosexuality is not a colonial import but rather existed in Africa centuries before Africa was colonized. They tend to be very Machiavellian; they believe that any lie is acceptable to support their agendum. It should be pointed out over and over again to them that they are bearing false witness.
Now, regarding stealing. These same "Christian" reactionaries assert that the U.S. was from the beginning a Christian nation. Either they are ignorant of the fact that the Founding Fathers were not all Christians (many were deists) and explicitly stated that the U.S. was not a Christian nation but rather supported total freedom of religion, or they are lying. If the U.S. had, from the beginning been a Christian nation, then why was land stolen from the indigenous Americans? Why were the Japanese-Americans incarcerated during World War II and their property stolen from them? Obviously both were stealing and completely unacceptable according to Christian principals.
These "Christian conservatives" set a lousy example for acting according to Christian principals. That is the reason that people are turning away from organized religion; they see the widespread hypocrisy in it.