Shia rulers who seized power behaved like the Sunnis they replaced

Evidence

But without exception, they failed to fulfill their promise. The great majority were ousted after a longer or shorter interval; the remainder, once established in power, forgot their earlier program, and conducted their affairs in ways not significantly different from those of the Sunnis whom they had overthrown. — Bernard Lewis, From Babel to Dragomans, 1435

Categorization

• XREF: Echoes a recurring political-science theme: revolutionary movements adopting the practices of the regimes they overthrow (cf. Trotsky’s ‘workers’ state’ debates, and the Fatehpuri analogy in South Asian historiography).