First it was the rainbow flag, now it is a pink triangle that bothers some parents of school children. At the Dec. 14 School Committee meeting, 30 parents voiced their opposition to the committee about a pink triangle sticker that appears on windows of some classrooms. The upside-down pink triangle marks a "safe zone" for gay, lesbian, bisexual and transgender youth (GLBT) and their adult allies. A place where GLBT students can seek support and advice from someone willing to offer assistance. The stickers have been targeted by parents for a variety of reasons including what they say are health...