This was never about anyone being unpatriotic; this was always about the right to exercise our freedoms, whether that means sitting or standing for the Pledge.
MORE: http://www.patheos.com/blogs/friendlyatheist/2013/12/03/we-raised-more-than-3000-for-the-morton-grove-park-district-and-they-rejected-it/
See also...
Yes, Salon, Atheists Do Help the Poor
http://www.patheos.com/blogs/friendlyatheist/2013/12/13/yes-salon-atheists-do-help-the-poor/
Update...
Morton Grove Library trustees vote to reject athiest blogger's donation
http://www.chicagotribune.com/news/local/breaking/chi-morton-grove-library-trustees-vote-to-reject-athiest-bloggers-donation-20131219,0,3784864.story