Bread and peace. Those are the basics (is peace a basic?) that the strikers are demanding.
I’ve just watched the TV news and there are huge crowds demonstrating in Plaza Colón and around the fuente de Neptuno. But this photo was taken just north of Neptune about five hours ago, when the mass of manifestación was elsewhere. The tall building just visible in the far distance (click the image for a closer view) is up by Colón.