By Lucy Craymer and Lewis Jackson WELLINGTON (Reuters) -Tens of thousands of New Zealanders rallied in front of parliament on Tuesday in one of the country's largest ever protests to oppose a bill, which opponents say seeks to dilute the rights of Maori and threatens to set race relations back decades.

Tens of thousands of New Zealanders confronted parliament to protest a law to redefine a treaty between the Maori and Britain.

The demonstrators oppose a law that would reshape the country's founding treaty between Indigenous Māori and the British Crown.