So what did you intend to do? If you're trying to make it as easy as possible for other people to use your code? CC0 (or, from a practical point of view of your audience being likely to know what the license means, 2-term BSD-style, Apache or MIT) does that better than your public domain declaration. If you're trying to make a political point, it would be more effective to make an explicit statement to that effect - if people just see a public domain declaration they're unlikely to even consider the idea that you meant to convey something political by this.