Extreme danger near [not in] Boca.
More on the great stickup. I went to Boca and wandered around the tourist-tango area near the river and then walked along the river to the right as you face the river for about 1km were the old derelict boats are with no problem at all. The next day I came back and did the tango area again, had some pizza in a very local place just outside the tango area bought some bootleg CD's from a very nice guy at a stand and walked along the river to the left as you face the river – also no prob.
BUT after about 300 meters to the left at the old disused big rusty steel bridge structure that is in all the tourist pictures, there are little boats that run across to the other side of the river. It is a very short distance – less than 100 meters to the other side. The boats are rowboats and very picturesque and well maintained. They look very atractive and legitimate. BE WARNED on the other side of the river, were they go, is one of the most dangerous places in BA – maybe in all of Argentina. It's called ISLA MARCEL. I was suck up at gunpoint almost immediately as I got off the boat – within 30 meters.
When I told my Argentine friends about it they thought it was almost funny that I managed to find the worst are in BA by accident - a place "where no tourists go and no Argentines go". This is a really lawless area that even the cops keep away from.
The thing about it is that the boats look so innocent – as if they were designed to look cute for tourists. At a minimum, those boats should be barred from taking ANY foreigners and warning signs should be posted. This is a major danger.