Indians used violent as well as peaceful means of agitation against the British rulers. The Congress Party was the largest anti-British organization. Led by Gandhi ji, it used non-violence and satyagraha to press its demands for independence.
Not all the Indians believed in peaceful means, though. The Indian National Army was a military organization that actively fought against the British forces during the Second World War.
There were a lot of revolutionaries also who used bombs and weapons against the British. Some of them were grouped under the Hindustan Republican Army.
I believe it was a negative force because It led to slave trade which then led to social discrimination around the world. It also damaged the cultures and created disunity among the natives. Last but not least, imperialism stripped countries off their natural resources and left nothing for the natives.
Are there aswer chocices.