"It also is considered to be a representation of the sun and is associated with the worship of Aryan sun gods," according to the site. "It is a symbol in both Jainism and Buddhism, as well as a Nordic runic emblem and a Navajo sign."
"Even today, the swastika is a common symbol across Asia, used by Hindus, Buddhists, and adherents of other religions, where it is often associated with good fortune," according to the Anti-Defamation League, which maintains an extensive database of hate symbols.
It was only in recent history that the swastika acquired its status as a hate symbol -- perhaps the hate symbol.
"The murderous legacy of the Nazi regime, especially the Holocaust, permanently converted the swastika into a symbol of hate, anti-Semitism and infamy," reads ADL.org's page about the swastika. " Since 1945, the swastika has served as the most significant and notorious of hate symbols, anti-Semitism and white supremacy for most of the world outside of Asia."
We are checking out reports that there might be other Trump billboards that have been similarly defaced. Sgt. Jonathan Howard of the Phoenix Police Department said shortly before 8 a.m. that he has not had any reports of billboards being vandalized.