September 26 is an important date for defenders of human rights in Mexico and their allies around the world. It marks five years since police attacked buses carrying students from a rural teachers college in Ayotzinapa and took 43 of the students away, never to be seen again.
Finding out what happened and bringing to justice everyone who played a role is obviously of tremendous importance to the families and classmates of the 43, who have never stopped looking for their loved ones.
Truth and justice for the 43 also has far-reaching consequences across Mexico.
The disappearance of the 43 students has come to symbolize a massive nationwide crisis. More than 40,000 people are now reported missing and the number continues to climb amid a toxic mix of corruption, collusion on the part of state security forces, lack of effective investigation and cover-ups.
"This case is emblematic because it represents the heart of corruption and impunity in Mexico, and the main challenge is breaking impunity pacts."
~ Mario Patron Sanchez, Centro Prodh Human Rights Centre