Hmm, your comment is actually kind of funny because the cool looking Ruta N building he mentions, in which the conference has held, is located right in the center of a slum, where it was intentionally built (like most big public works in Medellin) to actually make the city more inclusive by mixing people from different backgrounds in these spaces. It's a bit disturbing that you speak with such property when you have no notion of what you are taking about. I'd be very careful before extrapolating.

Building view for reference: http://static.iris.net.co/dinero/upload/images/2015/6/18/209...