Strange how freedom works. It is a wonder the United States can exist with an open ended license to proselytize.
Don't start with that crap. We're talking about in the workplace, remember? The right to free speech doesn't mean I get to spend all day at the water cooler shooting the breeze, or sitting in my cube singing at the top of my lungs. My boss isn't violating my rights by telling me I can't, and I'm not the "victim" if I do it anyway and get canned for it.