Awash in social media, cops still need the public to detect threats On Valentine’s Day weekend, Jonathan Hutson found himself exchanging tweets with somebody unpleasant: a Holocaust-denying anti-Semite, by the look of things. Then Hutson looked up the person’s earlier tweets. This guy was tweeting about shooting up a school. He said that he wanted to execute 30-plus grade-school kids.” So Hutson decided to draw the person […]