This was opened last year and while still under construction in Buenos Aires it is apparently a powerful and moving memorial. I have not seen it, but my daughter, who has been in Central and South America for several months working on a project towards her degree visited it recently.
The Monument to the Victims of State Terrorism is meant to commemorate the victims of the Argentinian junta in the 1970's and '80's . The monument overlooks the Rio de la Plata because many of the victims were dumped into the waters of the river.
It was designed as a gash, an open wound in a grassy hill, devoid of any other element except for the names of the dead and missing on porphyry steles along a route that starts in one of the "plazas" and ends on the esplanade overlooking the river.