progoniti

1. to persecute
   Režim je godinama progonio novinare i opoziciju. — The regime persecuted journalists and the opposition for years.
2. to pursue; to chase
   Policija progoni lopove kroz ceo grad. — The police are chasing the thieves across the whole city.
3. (of thoughts, memories) to haunt
   Još me progone sećanja na tu noć. — Memories of that night still haunt me.
   Progoni ga osećaj krivice. — He is haunted by guilt.

Proganjati is very often used with the same meaning.