Worthless and Weak

Lets suppose that you are the dictator of the world, with pretty much all government power vested in yourself. Now, lets suppose that you know, (from like, messages from the future or something), that a disease is going to come and kill lots of people, (whether its a virus or a bacteria or something else isn't important, this is a hypothetical question). Anyway, there is a group of people, an ethnic minority, who is about 10% of the population. They are spread out pretty much evenly throughout the world. They have their own culture, and most of the individuals sees himself as a member of their community. Also, they have been the target of ethnic hatred and mistrust for what seems like forever, and as a result they sometimes don't trust other people, or the government.

Anyway, each and every member of this ethnicity has a genetic vulnerability to this disease, and infact become walking incubators, and spread the disease to everyone. Anyway, you figure that if you were to genocide these people, the disease would probably kill about 70-75 percent of the earths population. If you let them alone, it will kill 95+% of the world's population. Now, what do you do?

Also, if a: they face certain death anyway, (ie, the virus will kill 100% of the ethnic minority)
b: if the ethnic minority has a resistance to the virus, (ie, hardly anyone in the minority will die. But they carry the disease, and anyone not of their ethnicity who comes into contact with them will die.)
c: if nobody in the ethnic minority believes you about the virus?

If you want to e-mail me responses, I'd love that. i'm at, garyl_2000@yahoo.com