A sign inside a Queensland retailer's store has led to a flood of online complaints and calls to boycott the store.
Cold Steel Piercing in Cairns North is understood to have turned a customer away purely because they were Israeli.
This allegation comes from comments posted by Mohr Wenger on her Facebook page, including an image of the alleged sign.
"The guy looked kind off (sic) confused and asked us where do we come from? Israel," Ms Wenger's post said.
"At that moment that guy said he can't pierce our nose because he doesn't serve Israelis out of principal."
Since Ms Wenger's Facebook post on Saturday, more than 100 negative reviews of the business have appeared online, including one calling for people to boycott and publicly shame the business.
Chairman of the Anti-Defamation Commission, Australia's leading civil rights organisation, Dr Dvir Abramovich said he was aghast and distressed by the reported conduct.
"The diseased clouds of bigotry and Israeli hatred have clearly darkened the skies of Cairns," he said.
"This blatant act of exclusion stains our community and must be denounced vigorously by all leaders.
"Such a shameful display of discrimination violates and betrays the Australian spirit of civility, inclusiveness and respect for people of all backgrounds and countries.
"It also sends the wrong message to all potential tourists that there are those in our country who choose the path of exclusion ... instead of extending a hand of friendship and putting out the welcome mat.
"Does the owner refuse to serve people from any other nations, or just those from the only Jewish state on earth?
"We call on the Queensland Anti-Discrimination Commission to investigate this outrageous episode and to take the necessary steps to ensure this type of stigmatisation does not happen again."
Fairfax Media's calls to Cold Steel Piercing went unanswered.