Pro-Femmes Twese Hamwe
Pro-Femmes Twese Hamwe is a national women's organization in Rwanda founded in 1992 that is recognized internationally for its contributions to rebuilding society after the 1994 Rwandan genocide. These women took on the role of reconstructing what had been damaged. In order to restore Rwanda the women created projects to improve the economy, establish peace, and offer new opportunities. The 13 women that started this organization were determined to speak out for injustices, especially against women, so they became a voice for change. The genocide incident caused great destruction; however, since 1994 the organization has grown to include 58 member associations. These women work hard to make the changes and help the minorities grow and develop. 
Pro-Femmes Twese Hamwe
The purpose of the organization is not only about the Rwanda genocide, even though that is when it had its greatest impact, it was created to enhance women activity and provide recognition in favor of women. Due to all of the discrimination women were facing back in the early 1990s, this was an effective way to put up fight. Because of this organization "Rwanda is amongst the best countries in the world in terms of women representation." Working with women was not enough to help society as whole, therefore, they ensured all human rights were being met so that there was no social injustice. Their achievements include "peacekeeping, conflict management, mediation and reconciliation that empower women in leadership roles." As well as helping soldiers, prisoners, and any discrimination within the people. Pro-Femmes received the 1996 UNESCO-Madanjeet Singh Prize for the promotion of tolerance and non-violence "for their outstanding contributions in rehabilitating families and communities devastated by mass violence, through their activities fostering a climate of peace based on tolerance and non-violence." They received the inaugural Gruber Prize for Women’s Rights in 2003.
Rwandan genocide
The crisis committee appointed an interim government on 8 April; using the terms of the 1991 constitution instead of the Arusha Accords, the committee designated Théodore Sindikubwabo as interim president of Rwanda, while Jean Kambanda was the new prime minister. All political parties were represented in the government, but most members were from the "Hutu Power" wings of their respective parties. The interim government was sworn in on 9 April, but relocated from Kigali to Gitarama on 12 April, ostensibly fleeing RPF's advance on the capital. The crisis committee was officially dissolved, but Bagosora and the senior officers remained the de facto rulers of the country. The government played its part in mobilising the population, giving the regime an air of legitimacy, but was effectively a puppet regime with no ability to halt the army or the Interahamwe's activities. When Roméo Dallaire visited the government's headquarters a week after its formation, he found most officials at leisure, describing their activities as "sorting out the seating plan for a meeting that was not about to convene any time soon". 
Rwandan genocide
The estimates of the number of people who were dead were guesses rather than estimates, since they were not based on any systematic counting process. An estimated 2,000,000 Rwandans, mostly Hutu, were displaced and became refugees. Additionally, 30% of the Pygmy Batwa were killed. The genocide and widespread slaughter of Rwandans ended after the Tutsi-backed and heavily armed Rwandan Patriotic Front (RPF), led by Paul Kagame, took control of the capital, Kigali, and the country.

Question: Who helped to rebuild society after 70% of the Tutsi population were killed?
Answer: Pro-Femmes Twese Hamwe