"The Arrest of Oscar Wilde at the Cadogan Hotel" is a well known piece of art. What form does it take?

Oscar's main squeeze was Lord Alfred Douglas ,the son of the Marquess of Queensberry (of boxing rules fame).He took objection to the relationship and hounded him through the Courts, resulting in a harsh imprisonment followed by self exile and ultimately an early death. His parents were quite unconformist for their day especially his mother , and his long suffering wife was also a minor celebrity in her own right.