The walls of Izzeldin Abuelaish's office at the University of Toronto are covered in photographs, but one, in particular, stands out.
Three of his daughters, Bessan, Mayar and Aya, sit on a beach in the Gaza Strip. The tide is out, and the girls - aged 13, 15 and 20 - have written their names in big letters on the sand. Mayar is barefoot, Aya looks..
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