Belgian paratroopers guard outside a Jewish school in the central city of Antwerp January 17, 2015. Security was tight at public buildings and Jewish districts in Brussels and Antwerp and the army provided 150 troops to bolster police presence, following a raid in an apartment in the city of Verviers. Belgian police killed two men who opened fire on them during one of about a dozen raids on Thursday against an Islamist group. REUTERS/Yves Herman (BELGIUMCIVIL UNREST – Tags: CRIME LAW MILITARY RELIGION EDUCATION)