After a summer of being tear gassed, can Hong Kong protesters go back to being students?

(CNN)Welcome signs, colorful banners and campus maps are plastered over Hong Kong’s colleges and high schools. It’s the first week of school, but there’s one problem — thousands of students are missing from the classrooms.At 10 of the city’s 13 universities, students are staging a class boycott, and student union leaders estimate that more than…

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