The Israeli minister appealed to California Governor Gavin Newsom and Los Angeles Mayor Karen Bass to address the alarming surge in antisemitic incidents.
Videos posted the morning after show much of the synagogue complex burnt, with Arabic graffiti sprayed on the walls of synagogue rooms which remained intact.
Khaled Hassan was employed as an Arabic-language moderator by YouTube, which he said refuses to take down videos glorifying terror and repeatedly ignores warnings from its monitors.
Police officials released on Wednesday further photos and information on the massacre in a Jerusalem synagogue which was carried out by two Arab terrorists in November.
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