Why has the world suddenly got it in for Uber?

It seems like almost every tenth article or so on HN these days is bashing Uber for some reason or another. The sheer number of such articles seems way out of proportion to the global importance of what is basically a taxi company. Why the massive interest? Why has Uber (which, until recently seemed to be universally considered a "good thing") suddenly become Public Enemy Number One?

It all seems too co-ordinated and persistent to be coincidental, so I smell an orchestrated campaign. But by whom and for why? What have I missed? What did Uber do to bring such opprobrium down on their heads?