http://www.signonsandiego.com/news/nation/20071003-1738-nv-mexicanflag-flap.html
http://www.usflag.org/uscode36.html
Did you bother to read the comments at the end of that article that cited chapter and verse of both federal and Nevada law, or just what the ACLU communists had to say? And if flying a foreign flag above our own is considered free speech then ripping the damned thing down should be, as well.