Kerbala is a microcosm. In the events of 10 days, in that one spot on earth, all the great lessons of the Qur'an were brought to life in front of the witness of history - and all those who were (or are today) in doubt that the highest ideals of the Qur'an could be lived up to - all those who felt that the highest Qur'anic ideals were beyond the reach of humans - were in that place on Earth, that Kerbala, proved wrong. Doubts were shattered, and the jewels of Qur'anic truth were brought out and displayed in the desert of Kerbala, shining with such a light that even today, so many centuries later, our vision is dazzled by those human gems.
The beginning of the Muslim New Year in the year 61 AH, the greatest act of renewal was begun. The events of the first 10 days of Muharram marked the point of a new beginning for Islam - when what was deviated was set right - when what was wrong was exposed in such a way that the shame of the wrongdoers has been manifested to every succeeding generation - and a weakened Islam was revived, restored, and reconnected with its spiritual and intellectual roots.
(Excerpt from "New Year's Day - Mourning the Imam (Leader)")