This photo is from a similar memorial service of Yousef Rizk Khalil Abu Kamil, 35, which shows what appears to be his son and younger brother again dressed like jihadis and the older one with a weapon.
Recruiting child soldier is against international law. And it is child abuse.
But people who pretend to be attuned to these sorts of outrages seem to have a blind spot when it is done by jihadists.