idols

Q: I have learnt that to demolish or disrespect the sacred idols (worshiped) (like to burn the statues or spitting on them inside the religious places like temple) of non Muslims kept at religious places or at any other place is sin. Is it permissible to destroy the idols inside the temple and plunder its booty as (maal-e-ghaneemat) during the war like jihad (between Muslims and Kaafir)? Also does Islam allow to do the same during the islamic law (khilafat) under normal conditions?