What's the Importance of the trial of Dr.Aziz in A Passage to India?

If any Indian was sympathetic to the British, it would be Dr. Aziz. When he is charged with making improper advances to Adela in the caves, Aziz becomes disillusioned with the British. The trial is the first big stem Aziz takes to becoming anti-colonial. The trial unravels everything Dr. Aziz believed as well as disrupting the lives of his British friends.

The trial is also symbolic of Indian oppression from the British. An Indian man charged with making moves on a white British lady in his own country becomes a symbol of colonial oppression.