Zazzle understands that not everyone identifies with the type of sentiments that commonly characterize the nation's bumpers. Their solution is a special section called Nuanced, Ambivalent, or Guarded, which features sentiments such as...
..."I fervently hope the local squadron defeats the out-of-town squadron in the upcoming sporting contest"...
..."I attended or am otherwise affiliated with a creditable university, to which I give my continued allegiance"...
and the classic, "I support one of the leading political candidates, but that's about all I'd like to say about the matter for now."
Fair enough!