These rockpiles are nothing more than 3-dimensional graffiti littering our government college campuses.  The people who erected them should be treated as vandals, same as teenagers who spray-paint their gang tags on walls.  The graffiti should be removed, and the vandals should be prosecuted.  Congratulations to anyone who uses the rockpile as a flag-holder to fly the U.S. flag. If Hawaiian sovereignty activists assert a free-speech right to fly the upside-down Hawaiian flag from the rockpile, then exactly the same free-speech right pertains to flying the U.S. flag.  To read about the cleanup of a similar rockpile at Iolani Palace a few years ago, see webpage "Iolani Palace Rockpile -- Religious Shrine Or Political Symbol?" at
http://www.angelfire.com/hi5/bigfiles3/IolaniRockpile.html