The next Bersih rally should include financial scandals during Dr Mahathir Mohamad's-era as part of its agenda, said Umno Grassroots Movement (Gaum) president Zulkarnain Mahdar.

Zulkarnain said he would write to Bersih chairperson Maria Chin Abdullah and her predecessor Ambiga Sreenevasan urging them to do so.

"(The scandals) involve the people's money, and it is not a small sum. We want justice.

"Don't speak about justice, but when it hits your own face, you don't want to (fight for justice)," he told reporters when met in Putrajaya today.