RABAT, Morocco (AP) — Tens of thousands of Moroccans marched silently through the streets of the capital towards an ocean-side cemetery Friday during the funeral of the country’s biggest opposition figure, an extraordinary show of support for a man who dared to directly challenge the nation’s powerful kings.

Sheikh Abdessalam Yassine founded Al Adl wal Ihsan, the country’s largest opposition movement, in the 1980s, and publicly criticized then-King Hassan II not only for running a corrupt, overly Westernized government, but also for taking on religious titles such as Commander of the Faithful.