Amazon has taken on a new opponent: Captain America. Try to pre-order a DVD or Blu-Ray of “Captain America: The Winter Soldier,” and you’ll come up empty. More on why the movie is the latest casualty in a pricing dispute between Amazon and Disney. Plus, Brussels, home to the European Parliament, is seeing lots of lobbyists from the U.S. tech industry. They’ve descended to advocate against new online privacy legislation. And right now, the perseid meteor shower is going on — The spectacle of shooting stars has long brought a sense of wonder to those who stay up to watch it. It’s also brought cash…Sort of.