ST. LOUIS • The Missouri History Museum canceled a speakers panel set for Thursday evening that intended, in part, to compare “state violence” in Ferguson and Palestine. Sourik Beltran, an anthropology student at Washington University and president of the student group AltaVoz, proposed the event early in February. He originally called it “From Ayotzinapa to Ferguson: A Dialogue on Solidarity and Inter-Movement Collaboration.” He said the goals were to connect activists, foster collaboration among social justice groups and “draw parallels between state violence here and in Mexico.” A week or two later, Beltran added a third comparison. The panel would...