Ahmed Isnasni and Abiba El Hajji were murdered by a National Front (now called National Rally) supporter who was upset that Marine Le Pen's father had lost the Presidential election.
The National Front thug also tried to kill their children and a neighbor, before retreating to his apartment and setting it on fire. When the police arrived, he tried unsuccessfully to kill them.
The thug had a lengthy history of attacking his neighbors and threatening immigrants beforehand, in an apparent attempt to drive them out of the neighborhood... in Belgium. Yes, that's right, he was murdering 'foreigners' because he was upset about the results of an election in ANOTHER COUNTRY.