It looks like the Ghost of the Democracy Wall in Carroll Gardens struck at some time again over the weekend, with the construction fence at 360 Smith Street curiously acquiring some shamrocks. Of course, the last time it was decorated, hearts appeared and, then, a short lived love message that was quickly removed. What’s interesting, though, is that the fence has so far avoided the advertising that ends up on a lot of others, especially given its high-traffic location. As for the Oliver House development itself, its website informs us that foundation work is ongoing: “Steel pipe piles will be installed in the ground along the west side of the site. These piles will be drilled into place using two drilling rigs, thus avoiding the noise and vibration normally associated with pile driving operations. Some truck loads of building materials will arrive at the site from time to time; and some debris will be removed in dumpsters from time to time.” And, you know, some decorative additions will be appear on the fence periodically.