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The school in South San Francisco, a small, historically working-class city now known for its biotech industry, carried out its plans to celebrate Gay Straight Alliance Week despite the disturbing and very thorough vandalism, which police called the work of one or two current or former students.

The hate messages included white-power slogans in English and Spanish and a "big hand spray painted with the middle finger sticking up saying, 'Day of Silence This,' a junior told KCBS reporter Holly Quan.