“An eight-year-old boy was assaulted in Sarcelles. Because he was wearing a kippah,” the French president tweeted.
“Every time a citizen is assaulted on the basis of his age, his appearance or his faith, the Republic as a whole is assaulted.”
“And it is the Republic as a whole today especially that stands alongside French people of the Jewish faith to fight these vile acts with them and for them.”
The attack came a day after a French Jewish community leader condemned a judge for not classifying the notorious killing of a Jewish mother as an antisemitic murder.
Sarah Halimi, 65, was tortured to death and thrown out of a third-floor window in April 2017.
A 27-year-old Malian Muslim, Kobili Traore, has been charged with intentional homicide.
But this week a judge rejected a prosecution request to reclassify the case as a murder motivated by antisemitism, a crime that carries a heavier penalty.
The judge, Anne Ihuellou, also ruled Mr Traore's mental state meant he should be protected from the French Jewish community's "hostile" attitude towards him.
But community leader Joel Mergui condemned the ruling, saying he could not understand it.
“It is definitely not good to be Jewish and to bear the name of Halimi in France,” he said, in a reference to the unrelated murder of Ilan Halimi in 2006.
“[They] were kidnapped, tortured and murdered because they were Jews. We thought the time of denial finally over. It seems that it is not so. I think I need to worry very legitimately.”
