State and national teachers’ unions have filed a brief supporting a transgender Hillsborough County teacher challenging a Florida law that mandates educators use pronouns aligning with their sex assigned at birth. The unions argue that the law violates the teacher’s First Amendment rights and is part of a broader discriminatory effort against the LGBTQ+ community. Read: Former Riverview High School Teacher And Coach Arrested For Sexual Relationship With Student The Florida Education Association, National Education Association, and American Federation of Teachers argue that the law specifically…