A New Hampshire court has denied an injunction against a band of self-styled Robin Hoods who feed parking meters while following meter readers.    The state Supreme Court ruled in June that the group's conduct was protected under the First Amendment but said Keene could pursue an injunction against them in the interest of public safety.    The Concord Monitor reports the city offered two proposals for injunction. One required the activists to stay 10 feet away from parking enforcement officers when asked. The other required the same distance when within 15 feet of a parking meter, metered parking space or crosswalk, unless they're walking past the officer.    A Superior Court judge said Friday the proposals are not sufficiently tailored to protect the government's interests while also not "overburdening speech."