AMSTERDAM — When a television news program for kids on Dutch public broadcaster NOS suggested on social media that the firebombing of an Orthodox Jewish day school in Amsterdam on Friday night may be explained by “the wars Israel wages in the Middle East,” pro-Israel lawmakers and activists were quick to voice their criticisms. The post by the “Jeugdjournaal” show, which is aimed at children ages 9-12, said of the school bombing: “Most people in Israel are Jewish. And in the Netherlands, there are Jews who support that country. That’s why they receive hateful reactions from people who support the...