Supreme Court will hear First Amendment case Wednesday . Case is about protest buffer zone near abortion clinics in Massachusetts . The justices are expected to rule on whether the law violates free speech rights of protesters who block entrances and exits at clinics. A metaphoric line -- testing the competing limits of what has become a constitutional fight between free speech and public safety -- will now be surveyed by the nation 's highest court . Critics say it limits their right to talk with patients .
Supreme Court will hear First Amendment case Wednesday . Case is about protest buffer zone near abortion clinics in Massachusetts . The justices are expected to rule on whether the law violates free speech rights of protesters who block entrances and exits at clinics. Critics say it limits their right to talk with patients .