To suggest otherwise is in my opinion, utterly naive, but in the very least shortsighted.
Conflicts aren't always bad. We just need conflict resolution.
I don't care about the Nobel Peace Prize one jot, but if I did, I'd definitely want a prize for Assange, though he is a very controversial figure.
I don't regret the sarcasm: your presumption that defining what can be classified as a veritable struggle for human welfare can, in turn, be used as an argument for which struggles are most deserving of praise is what is called a straw man argument, perhaps the most annoying fallacy to refute before an audience of undecided thinkers as it is effective despite being logically inconsistent.
Is there a notable prize for civil disobedience or similar?
The Rafto Prize comes pretty close; its purpose is more or less explicitly stated as raising awareness of lesser-known human rights activists to make their work easier and provide the modicum of protection that international awareness gives.
Jail time, usually.