PATRIOTIC
Regardless of your political standing, you should be able to show your patriotism for the United States—that's the idea on which we were founded. Our slogan here at State of the Button is that "Patriotism is for everyone."
There's already plenty of patriotic gear for people who lean right, but this neutral display of patriotism goes beyond parties. No matter what your beliefs are, if you love the USA and want it to succeed, then you're a patriot.