Sentence:  Marc Hokoana messaged a friend on Facebook the day before Yiannopoulos was scheduled to talk and said he “can't wait for tomorrow”, according to police officials. In the Facebook message, obtained by a search warrant, he wrote: “I'm going to the Milo event and if the <WSD>snowflakes</WSD> get out offSIC hand I'm just going to wade through their ranks and start cracking skulls.” 
Meaning of the word marked with <WSD> tags:  Someone who believes they are as unique and special as a snowflake; someone hypersensitive to insult or offense, especially a young person with politically correct sensibilities.