She came to national prominence with her work within the Human Rights Committee of the Malaysian Bar highlighting the issues being faced by the indigenous peoples of Malaysia.
Her work has since grown to encompass defending the rights of other minority and marginalised communities of Malaysia, and championing the ideal of an inclusive and progressive Malaysian society.
[5] Tracing the root of the malaise within the Malaysian political and social landscape to excessive intertwining of government and religious affairs, she made the separation of state and religion a key pillar of her campaign.
On 21 July 2023, a suspicious object was discovered on the rear tyre of Siti Kasim's Toyota Celica when she sent the car for servicing.
Brickfields police chief Assistant Commissioner Amihizam Abdul Shukor confirmed that the object was an improvised explosive device and an investigation is under way.