The creepy clowns causing panic in the US

It started as a social media post and has turned into a craze sweeping across the US. Creepy clowns have begun mysteriously appearing on roadsides or in woods. Some have been using social media to make threats to schools and other public buildings, and now there are reports of clowns committing violent attacks and armed robberies. With more police patrols, some arrests, and terrified locals, is this prank spinning out of control?