How did AIDS/HIV originate?

I have heard so many akward rumors about how HIV/AIDS came about and would like to know the truth.

Well, viruses are all the time subjects of more or less random gene modification, as when multiplying in a host cell. Mostly, the altered genes doesn't affect the viral capabilities to attach and infect "victims", other times, it might give to virus a disadvantage, maybe making it totally useless, and it will die out from lack of multiplication. Sometimes on the other hand, the virus gains an advantage over its fellow virus by gaining some abilities, and thus might multiply faster. In such a way, we get new viral subfamilies (As the "different" flu each season), and new superfamilies, causing "new" diseases.
The HIV was first zoological, attacking primates, however, as stated earlier, it (or some of them) changed its gene-composition, and voila!

Btw, this has nothing to do with labs and so on! What about the back plague, killing about 50% of the European population in the 1300 century? Did they have have a shitload of microbiological labs at that time? Diseases evovle, be it viral, bacterial or fungal ones, just like the rest of us, you just have to accept it. And thank God for diseases like this, since it does protect us from overpopulation, which might have dire consequences.

From what I heard it was brought over from Africa during slavery.

The only way AIDS/HIV could've originated is in a LAB !