It's more the equivalent of walking around, in your spare time, with a T-Shirt that says "I love Obama." You never wear this shirt to work, but your boss, a strident Obama disapprover sees you on your time off and fires you for it.
Or more accurately, they hire an agency who monitors heavily populated areas such as malls, movie theaters, et cetera, to look for any employees with "I love Obama" t-shirts
XI Wiki



