TNS NIPO , a Dutch research and polling agency , observed an increase in anti-Muslim sentiment after the September 11 attacks , but claimed unfavorable views of Muslims were already high in the country prior to the attacks . According to research by Ineke van der Valk , an author and researcher at the University of Amsterdam , a third of mosques in the Netherlands have experienced at least one incident of vandalism , threatening letters , attempted arson , or other aggressive actions in the past 10 years . In February 2016 , five men threw two Molotov cocktails at a mosque . Some 30 people , including children , were inside the mosque at the time but no one was injured . Dutch courts called it a " terrorist act . " In December of the same year , a building linked to the Association of Islamic Communities was set on fire . Police suspected it was a hate crime . Muslim students have more difficulties finding internships for vocational training . This discrimination is more present towards female students wearing a headscarfs
September 11 attacks
September 11 attacks
Islam in the Netherlands