Most of what has been labelled a war crime by Gadaffi is definitely NOT attacking armed insurgents but unarmed protesters. General shooting without any real effort to target those armed, or aerial bombings that make no effort to specifically target military targets are the other areas of particular note. (The details on the bombing are somewhat more disputed due to a lack to reliable info.)
They are definitely not unarmed. I saw tv images of them manning RPGs, anti aircraft artillery and what not. Granted, perhaps the first days the protest it was mostly peaceful, but thats kind of hard to judge from here, as is the level of violence used against them initially and whether or not that was wholly disproportionate. At this point, they are clearly fighting though, this is not a peaceful protest but more a civil war and what the Gaddafi regime is doing doesnt seem very different from what all regimes over the world are doing when faced with armed resistance.
As for the bombings, look, I really dont like defending Gaddafi, but lets keep some perspective; what I heard there have been airstrikes on ammunition depots and military installations in the liberated east, and some pilots apparently (deliberately?) missed by miles. So far Ive not seen much evidence that Gaddafi's attempts to squash this rebellion is particularly bloody let alone genocidal compared to any other similar situation. I dont think he is shelling entire villages or clusterbombing highly populated area's. Unlike some "democraties" fighting resistance.
FWIW, the number of casualties being reported so far, sound considerably less than the number of casualties in the Egypt uprising, which was considered all together peaceful by most.