Either turn your backs to him when starts to speak or all walk out as soon as he starts to speak, row by row, one by one as a form of protest. Or both…

“Terrible things are happening outside. Poor helpless people are being dragged out of their homes. Families are torn apart. Men, women, and children are separated. Children come home from school to find that their parents have disappeared.”

Diary of Anne Frank
January 13, 1943