The article being here. Which begins with, "BERKELEY - UC Berkeley, the birthplace of the Free Speech Movement, was rocked Wednesday night by a violent demonstration seeking to stop right-wing lightning rod Milo Yiannopoulos from delivering a talk there". Dr. Wiki has a slightly different opinion.
Leftists will respond that Milo is some sort of fascist hate monger who doesn't deserve freedom of speech for reasons of public safety. The rebuttal here is that all people who disagree with Leftists are categorized the same way. My opinion being that Leftists have always bravely supported their own freedom of speech when they are in a rage, which is almost all the time. When they don't want to hear something, however, there is never any freedom of speech. Or to put it another way, the only freedom of speech that matters to them is their own.