Abu Hazim (may Allah have mercy on him) says: The people will always remain upon good as long as those desires from which they (the rulers) protect the people do not enter their rulers. When those (desires) enter them, then who will protect (the people) from them?
Hadith Referenceالسنن الكبرى للبيهقي / كتاب قتال أهل البغي / 16653