I'm seeing a lot of mention of "copyright" in this thread. Brothers, just a heads up, but...
The JW.org logo is not copyrighted! You cannot copyright names, titles, slogans or short phrases. This includes logos.
Source: http://www.copyright.gov/help/faq/faq-protect.html#title
That's right. There is a big difference between copyrights and trademarks. Logos are typically trademarked, not copyrighted. The only rare possibility to copyright a logo is if it's sufficiently unique and artistic (and the JW.org logo has already been deemed to not be unique and artistic enough even for a trademark, in fact the original application for the JW.org logo through the US Patent and Trademark office was denied for that very reason [US Serial Registration Number: 85896124], though upon revision it was eventually approved for trademark which is still not the same as a copyright). Even then there is no legal basis for preventing someone from wearing/using/promoting a logo unless they're trying to falsely use the logo to act as a representative or agent of the business/organization the logo belongs to.
For a very basic example....Think of Nike shoes. Or Nike branded shirts.
cop·y·right
ˈkäpēˌrīt/
noun
1.
the exclusive legal right, given to an originator or an assignee to print, publish, perform, film, or record literary, artistic, or musical material, and to authorize others to do the same.
trade·mark
ˈtrādˌmärk/
noun
1.
a symbol, word, or words legally registered or established by use as representing a company or product.
synonyms:
logo, brand, emblem, sign, mark, stamp, symbol, badge, crest, monogram, colophon;More
I hope this sheds some light on the matter.