SB 4.14.16

sa te mā vinaśed vīra
 prajānāṁ kṣema-lakṣaṇaḥ
yasmin vinaṣṭe nṛpatir
 aiśvaryād avarohati
Word for word: 
saḥ — that spiritual life; te — by you; — do not; vinaśet — let it be spoiled; vīra — O hero; prajānām — of the people; kṣema-lakṣaṇaḥ — the cause of prosperity; yasmin — which; vinaṣṭe — being spoiled; nṛpatiḥ — the king; aiśvaryāt — from opulence; avarohati — falls down.
Translation: 
The sages continued: O great hero, for this reason you should not be the cause of spoiling the spiritual life of the general populace. If their spiritual life is spoiled because of your activities, you will certainly fall down from your opulent and royal position.
Purport: 

Formerly, in practically all parts of the world, there were monarchies, but gradually as monarchy declined from the ideal life of religion to the godless life of sense gratification, monarchies all over the world were abolished. However, simply abolishing monarchy and replacing it with democracy is not sufficient unless the government men are religious and follow in the footsteps of great religious personalities.