Prime Minister Anthony Albanese has called for an end to antisemitism, following a spate of attacks.
“Antisemitism has consequences,” Albanese said from the Sydney Jewish Museum on Wednesday.
“We need an end to antisemitism. It is evil.
Know the news with the 7NEWS app: Download today 
“It diminishes us as a nation when we have events such as we saw here again overnight.”
Albanese said an attack being staged so close to the museum is “completely abhorrent to who we are as Australians”.
“Holocaust survivors came to Australia because we are a tolerant country — one in which, our whole Australian society is enriched by people living side by side, of different faith, different ethnicity, different backgrounds,” he said.
Albanese’s statement comes after the Adass Israel Synagogue at Ripponlea, in Melbourne’s southeast, was set alight with people inside in a pre-dawn attack on Friday.
“I unequivocally condemn these shameful acts of violence aimed at the Jewish community,” Albanese said.
“They are acts which are aimed at promoting fear in the community and that by any definition is what terrorism is about.”
Earlier, Executive Council of Australian Jewry co-chief executive Alex Ryvchin said there was anger in the Jewish community and the prime minister needs to act decisively.
“There’s a sense that we, as a society, and particularly the federal government, have allowed this to occur, that the government has presided over the most steep increase in anti-Semitism in Australian history,” he said on Wednesday.
Ryvchin said a lot of difficult conversations were taking place in the community as people questioned their place in society following a spate of attacks.
“They’re questioning their future in Australia,” he said.
“They’re feeling more safe abroad than they are in this country.”
The prime minister said he was briefed the morning after the arson attack by federal police, responded on radio and via a statement, and spoke to local Jewish community leaders as well as the local federal MP for the area.
The government was working behind the scenes in the days after to ensure security funding was available for the community, Albanese said.
“Australians are respectful people,” he told ABC radio on Wednesday.
“Australians want to live peacefully, side by side, and Australians reject this abhorrent criminal behaviour.
“This is not a political act.
“This does not change anything that is occurring on the ground in the Middle East, this is an attack against their fellow Australians.”
Albanese visited the synagogue on Tuesday, four days after the attack, when he promised to support its rebuild, but was jeered by some angry people over his handling of the situation.
As he was leaving,a woman called out: “Your words are cheap and late”, and “You are late. You let this happen, buddy”.
Another asked if he was “going to the Australian Open”, referring to Albanese playing tennis at the weekend.
Government minister Clare O’Neil also visited the site on Tuesday, after Albanese left, and spoke to community members.
She said the angry reaction to the prime minister’s visit was not universal, and some hecklers were not locals.
“People were grateful that the prime minister was there, they were pleased to have him there and of course to see him make that commitment to help rebuild the synagogue,” she told 7NEWS Sunrise.
Yumi Rosenbaum, whose family have been in the synagogue’s congregation for three generations, said community members had already made attempts to practise their faith since the attack.
“We’re resilient people, we’re not the type to get too down and we don’t give up easily,” he told AAP.
Rosenbaum said Adass Israel members had been allowed to use a nearby school’s synagogue.
A full reconstruction of the destroyed synagogue could take several yyears,despite an outpouring of community donations and government funding.
Albanese has committed to providing support for the synagogue’s rebuild and funding for the restoration or replacement of scrolls damaged in the fire.
Victoria’s government announced that 15 community organisations would receive $950,000 in security funding.
Grants of up to $200,000 were available to Jewish community organisations to support the purchase, installation or improvement of security equipment at community facilities.
Three people are on the run following the arson after it was declared a likely terror attack on Monday, with investigators from Victoria Police, Australian Federal Police and spy agency ASIO leading the probe.
An Islamic school bus in Adelaide was also set alight earlier this week.
The bus, belonging to Islamic school IQRA college, was parked on Matheson Rd in Reynella when it burst into flames just before midnight on Sunday.
Bus driver Errol Koch raced outside and grabbed his garden hose to try to extinguish the flames however they were too strong, and the vehicle was extensively damaged in the blaze.
Crime scene investigators believe the fire was deliberately lit, with fears the attack may have been racially motivated.
Koch managed to get the students to school on Monday morning, however their exams needed to be rescheduled.