I'm on my way to a Tango lesson soon, so a quick update only. I shot this today during a protest. While shooting the protest I got into a conversation with a guy from Buenos Aires who grumbled that the protesters were already getting benefits, and they were protesting because they wanted more free money, and people who were working, like himself, were paying for them anyway. He then wanted to be sure that I understood, as a tourist, that this protest was not really Argentina. I assured him that I'd seen lots of other aspects of Argentina also, and that I was good.
Still, makes for good photos.