Art the Clown is back! Or, is... in his first outing! Depends on where you put the previous Damien Leone shorts in the hierarchy, but Terrifier is a full 90 minute romp where Art the Clown does what Art (blog post) the Clown does best. No, that is not explain his motives in the (blog post) slightest.
Source: Terrifier Movie Review - Decker Shado