Greenpeace activists climbed on top of and gathered in front of the Hewlett Packard headquarters in Palo Alto to protest against the electronics giant for backtracking on its public commitment to eliminate key toxic chemicals in its products by the end of 2009 Greenpeace activists painted the message “Hazardous Products” in non-toxic finger-paint, covering more than 11,500 square feet, (1,068 square meters)..