Sylvia Pankhurst, who is quoted at the beginning of this review, did eventually become a communist and pacifist, although the quote about her supporters needing to learn jiujitsu and carry sticks for self-defense is verbatim from an interview she gave in August of 1913.

No, the story is more specifically about a secret society of women who serve as bodyguards and field agents for the radical suffragette movement in England. The issues of slavery and temperance weren't so much part of the British suffrage agenda circa 1914.

One of the protagonists is conflicted because her group's militant tactics (protests by mass vandalism, etc.) are turning some former supporters away from the suffrage cause, but the bulk of the story is about the adventures of the most radical suffragettes.

Many of the American suffragists were pacifists but Mrs. Pankhurst's followers in England were radicals. They rioted and even bombed unoccupied buildings as part of their protests as well as (actually!) forming an all-female, martial arts-trained bodyguard unit to keep their leaders out of jail as long as possible.