Well even a non profit can still be taken down. See when they allow one person to do other will do it too. Companies have to protect their trademarks. Some companies are power hungry A holes but even decent carefree companies that may like what your doing still at some points need to step in and close it down. In order to keep a trademark you have to protect it. if you do not protect it you lose it. That is the way they work.
Now as long as you do not represent it in a insulting manner or in a way they could lose money from then you may get bet bye.