LONDON (JTA) – A haredi Orthodox rabbi from London was labeled “a threat” within his community for speaking out about the anti-Semitism problem of Britain’s Labour Party.

Avraham Pinter of Stamford Hill in northern London was called “rodef” in Yiddish-language fliers that were passed around last week in the heavily haredi populated area, Metro reported. The Hebrew word means “persecutor” and often is translated to mean a threat to society.

Some interpret it to mean the person in question may be harmed in self-defense, or even killed, though this interpretation is disputed.

The fliers followed several occasions in which Pinter criticized Labour for failing to address the proliferation of anti-Semitic incidents in its ranks following the 2015 election of its’ leader Jeremy Corbyn, a hard-left politician who has called Hamas and Hezbollah his friends. Corbyn’s Labour is seeking to unseat the Conservative Prime Minister Boris Johnson in the Dec. 12 general elections.

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Shraga Stern, a pro-Corbyn haredi activist, called Pinter a “kapo” earlier this year over Pinter’s criticism.

Shortly before the fliers appeared, Pinter objected to remarks made by Diane Abbott, a close ally of Corbyn, who suggested that the Jewish community in Stamford Hill did not share the same concerns about anti-Semitism as mainstream Jewish communal organizations.

Pinter said Abbott was “out of touch with reality” over those remarks.