What similarities and differences does gandhi point out between his movement and the "party of violence"? why is it important for gandhi to include in the letter a discussion of why the two movements are not equivalent

It is important for Gandhi to include in the letter a discussion of why the two movements are not equivalent to promote peace to both parties.

Ghandi introduced new methods of social struggle, such as the hunger strike, and in his programs he rejected the armed struggle and carried out a preaching of the Ahimsa (non-violence) as a way of resisting British rule. He defended and promoted widely the total fidelity to the dictates of the conscience, even reaching civil disobedience if necessary; In addition, he fought for the return to the old Hindu traditions.