“Historical context and use of the symbol as a harbinger of violence and murder is at issue here,” Hillsborough resident Katherine Walker tells the Orange County Schools Board of Education Monday, April 24, 2017. Walker, who has three children in Orange County Schools, also held up blue and red bandanas, which have been associated with gangs, and a swastika as examples of “disruptive, violent” symbols that schools have banned. Mark Schultz mschultz@newsobserver.com