A Sydney man has been charged over an alleged anti-Semitic incident as Victorian police bolster security at Melbourne synagogues and schools in line with their NSW counterparts.
Abdullah Al-Taay, 23, was granted bail when he appeared in court on Thursday after he allegedly verbally abused and threatened four teenagers who unfurled an Israeli flag across their car.
The incident was reported to police on Monday in the Sydney eastern-city suburb of Bellevue Hill.
NSW Police were working with all communities to keep them safe amid the rising tensions, Detective Superintendent Jodi Radmore said.
"The young people were going about their business, they were affixing an Israeli flag to their motor vehicle on their way to a peaceful vigil nearby when the driver of the vehicle stopped and started to threaten them," she said.
Police Minister Yasmin Catley said NSW took all instances of anti-Semitism seriously and there was no place for any kind of hate.
Victoria Police investigated anti-Semitic threats levelled at a bystander from a car in the city's upscale South Yarra area on Tuesday afternoon.
Police said the man who was abused was satisfied with their response to the incident and no further action would be taken.
Victorian Premier Jacinta Allan confirmed security would be increased around key locations such as synagogues and schools following requests.
"This is a very, very difficult time for the Jewish community," she said.
"We do need to ensure we're providing a safe and harmonious setting here in Victoria and that is the work that Victoria Police is focused on."
Thousands of people made a show of solidarity in Sydney's east on Wednesday night as the death toll in Israel rose to more than 1000.
Scores of other people were taken hostage by the militants after they breached the fence enclosing Gaza on Saturday.
About 5000 people descended upon Rodney Reserve in Dover Heights, many clutching Israeli and Australian flags as well as signs reading "safety is a right" and "united with Israel".
Rabbi Aron Moss from Bondi's Nefesh synagogue said the community was reeling from the weekend attack.
"We're all in pain," he told AAP.
"Everyone has somebody they know in Israel.
"Everyone here is just one step away from somebody who's lost their lives or has gone missing so it's very personal for all of us."
Jillian Segal, president of the Executive Council of Australian Jewry, addressed a solemn crowd, describing the attacks by Hamas as a "date that will live in infamy".
"Our world has changed, the barbarians have breached the gates," she said.
"The butchery and savagery that has unfolded in Israel beggars description ... we are totally shattered as we stand together this evening."
The Jewish community has been on high alert since a cluster of anti-Israeli protests and reports of anti-Semitic threats.
At a pro-Palestine rally on Monday night at the Sydney Opera House some attendees chanted anti-Jewish rhetoric and lit flares.
Rabbi Moss said the threats and anti-Semitic sentiment was not the Australian way.
"Everyone's nervous and scared, but we also have a quiet faith that goodness will prevail," he said.
