Obsessive-compulsive disorder is characterized by unreasonable thoughts and fears (obsessions) that lead to compulsive behaviors.

OCD often centers on themes such as a fear of germs or the need to arrange objects in a specific manner. Symptoms usually begin gradually and vary throughout life.

We see this kind of stuff every day from the media. They are obsessed with every small detail of Trump's existence. They compulsively feel the need to not only point to something negative, but also the sinister, the unbalanced, or what they see as "evil."