According to the (Leftist) Houston Chronicle, owned by the San Francisco Chronicle, ObraGore had about TWENTY THOUSAND supporters show up at the Zocalo Sunday: http://www.chron.com/disp/story.mpl/front/4098227.html Were those the ones who went on to form the human chain or did others do that? Either way, it would seem that support is dying down...
Now if only Mexico would legislate heavily enough against the formation of such traffic-blocking human walls, especially given how the USA is finally putting a wall on its Southern border to pressure Mexico to finally embrace its own pro-entrepreneurial reformers (like Felipe Calderon, who could make life less cushy for Mexican oligarchs like telecommunications monopolist Carlos Slim).