A Connecticut woman who was fired after she posted disparaging remarks about her boss on Facebook has prompted a first-of-its-kind legal case by federal authorities who say her comments are protected speech under labor laws, reports the Associated Press. The National Labor Relations Board alleges that American Medical Response of Connecticut Inc. illegally fired Dawn-Marie Souza from her job as an emergency medical technician late last year after she criticized her supervisor on her personal Facebook page and then traded Facebook messages about the negative comments with other employees. The complaint, filed Oct. 27 by the board’s Hartford, Conn., regional office, could set a precedent for employers to heed as more workers use social networking sites to share details about their jobs…