The separatists are becoming obsessed with their racist ideas.

An obsession with novelty is causing wine drinkers to reject some of the finest traditional grape varieties in their search for exclusivity in the form of little known and rare wines.

I think Tom is obsessive.

Tom is obsessed with Ancient Egypt.

Tom is obsessed with privacy.

Sami was absolutely obsessed with Layla.

Sami's mistress is obsessed with him.

A prisoner is more obsessed with the idea of escaping than his warden by the idea of watching over him. Thus, a prisoner will always manage to escape.

Tom is obsessed with Australia.

John is obsessed about getting into a top tier university.