 Complete the following phrase:  On 7 January 2015, two French Muslim extremists attacked the Paris headquarters of Charlie Hebdo and killed thirteen people, in an attack claimed by Al-Qaeda in the Arabian Peninsula, and on 9 January, a third terrorist, who claimed he was part of ISIL, killed four hostages during an attack at a Jewish grocery store at Porte de Vincennes. On 11 January an estimated 1.5 million people marched in Paris in a show of solidarity against terrorism and in support of freedom of speech. On 13 November of the same year, 