amritsar is the home, the spiritual center of the sikh faith. heart of amritsar stands the majestic golden temple, the sikh equivalent of the vatican. sikhs are fundamentally against any caste system, believers in religious tolerance. but they are just as fundamentally war-like when it comes to defending their principles and what they see as their territory. >> man: welcome to golden temple. >> anthony: thank you. today is a gurpurab, one of the most auspicious days of the sikh calendar. pilgrims from all over the world come to worship, walk the perimeter, and bathe in the holy pool. all are welcome, of any faith or caste. to remove their shoes, wash their feet, cover their heads, and take part in a simple meal . [ speaking punjabi ] >> anthony: this is the langar. a free vegetarian meal served to many thousands of visitors from every walk of life, every day of the year. they serve sixteen hours a day? >> donwat singh: sixteen hours a day. >> anthony: for how many years? continuously. >> donwat singh: three hundred years. >> anthony: three hundr