By SHEIKH SAALIQ
Associated Press ABOARD THE THIRUKKURAL EXPRESS, India (AP) — The 1,800-mile (2,900-kilometer) journey south from New Delhi to Kanyakumari is one of the longest train rides in India, passing through cities, villages, scrub forests and deep ravines. The 22-car Thirukkural Express is a microcosm of India, carrying passengers from different castes and religions and with wide-ranging ambitions and grievances — from migrants crammed …