We can analyse forever but it is still inexplicable.

"Mawanella experienced a spate of violent anti-Muslim attacks in 2001 that shook the town," wrote M Srinivasan. "In 2018, Digana, located 40 km east of Mawanella, witnessed one of the worst targeted attacks on Muslims in years. Following a road rage incident, at least one Muslim youth died, and Muslim-owned property worth millions was burnt down. Many saw the incident as a crude expression of a resurgent Sinhala-Buddhist extremism." In 1990, Tamil Tigers, who were Hindus, evicted 90,000 Muslims from Jaffna who settled in refugee camps in Puttalam district, wrote N Subaramanian. New mosques were built with money from Saudi Arabia. A cable from the Saudi foreign minister to the Saudi Ambassador in Sri Lanka asked "the ambassador to ensure Saudi citizens did not travel outside near churches on Easter Sunday, while asking him to delete all documents related to it", wrote I Bagchi. But, why target churches? It was "to attract maximum international attention" and the attacks on hotels were designed to hurt tourism. At $4.4 billion, tourism provides 5% of Sri Lanka's gross domestic product (GDP). Most of the bombers were well educated and had traveled abroad. "There was a time when Muslims went to the UK and came back "anglicised", speaking English in an accent unfamiliar in Pakistan," wrote K Ahmed. "Today, they return transformed into what a medieval Muslim man would have looked like -- bearded and clad midway between Saudi Arabia and India, a total stranger to spoken English." "The ground for current terrorism was laid in the 80s when Mujahideen were manufactured in the Salafi mould with Saudi money, American training and equipment and hundreds of Pakistan built madrasas along the Afghanistan-Pakistan border primarily to expel the Soviets from Afghanistan," wrote S Naqvi. After the Soviets were expelled, the Americans went home and terrorists spread to "Kashmir, Egypt and Algeria". Now the enemy is Shia Iran. "The sudden establishment of the Islamic State in Mosul remains an uninvestigated mystery. When the IS charged towards Baghdad wielding the latest arms mounted on Humvees straight from the showroom, my sources in Najaf were convinced of their American sponsorship." Which maybe why Russia was so successful in defeating IS in Syria while the US was not. Sri Lanka refused to believe intelligence from India about possible attacks because they believed that New Delhi was "trying to pit Colombo against Pakistan by pointing fingers at the island's Muslim community". The bombs used in Sri Lanka were made of "triacetone triperoxide, an unstable but easily made mixture favored by Islamic State militants who call it "Mother of Satan". All this analysis still does no explain why so many innocent people, including children, were killed. They were only enjoying themselves.