Over 1,000 people came to a Defend Democracy in Tower Hamlets meeting in east London on Thursday of last week.
It was called after Lutfur Rahman was removed as mayor of Tower Hamlets after an islamophobic witch hunt.
Councillor Alibor Choudhury was also found guilty of “corrupt practices”.
Commissioners have been sent in to run the local authority until a new mayor is elected on 11 June.
Rahman announced that councillor Rabina Khan will stand as an Independent. He said, “The establishment could not win at the ballot box—37,000 residents’ votes have been overturned.”
Other speakers included Salma Yaqoob, Lindsey German from the Stop the War coalition, local trade unionist John McLoughlin, Weyman Bennett, and Andrew Murray from the Unite union.