Hong Kong Students Defy Ban, Wear Masks To Graduation

In Hong Kong, students wore protest masks at their graduation to support pro-democracy protests. Despite a government ban on masks, they defended their rights to freedom of expression. The students demanded universal suffrage and an inquiry into police conduct. The graduation ceremony was cut short, but no arrests were made.

What reasons did the vice president of the University Student Union give for the students' actions?

What was the outcome of the graduation ceremony as described in the text?