There are indeed identifiable ethnic groups. The rebel side is made up primarily of one set of tribes, from specific cities in Libya, especially Eastern cities, while Gadaffi is supported primarily by a different set of tribes. If Gadaffi were to win, and occupy Benghazi and other places where essentially the entire population opposed him, I believe he would begin wholesale slaughtering all the able bodied men, and perhaps many of the women and children too, for no other reason than their membership in those tribes.
gen·o·cide /ˈdʒɛnəˌsaɪd/ Show Spelled
[jen-uh-sahyd] Show IPA
–noun
the deliberate and systematic extermination of a national, racial, political, or cultural group.
Please feel free to post some actual facts as opposed to your beliefs. There is a civil war going on in Libya at present, and to the best of my knowledge there is no ethnic, split in the combatants, Libya is about 97% arab and berber, of various flavours including Tuereg , berber , as well as others. They are entirly mixed on both sides of the conflict which is apparantly based on a wish to remove Gahdaffi as opposed to imposing rule by a specific party. The Muslim brotherhood has a finger in this pie but how much and they are directing things or who the actual leaders of the rebels are is a question that has not been answered as of yet.
Rather, I think it's a duty.