Sikh,a follower of Sikhism, a religion that originated in the 15th century in the Punjab region of South Asia. The term "Sikh" has its origin in Sanskrit term , meaning disciple, student, or ("instruction"). A Sikh is a disciple/subject of the Guru.form a sanA Sikh is a disciple/subject of the Guru.

http://en.wikipedia.org/wiki/Sikh

Sanskrit people Originated in what is now northern Pakistan and are the forefathers of modern Hindu/Indus peoples.

Musilim fighters and Hindu/Indus peoples have clashed for centuries.With often deadly consequences,but never in any large organized attack in the America before.