The 34-year-old took the stage at the end of the march and endorsed neo-Nazi views before being immediately arrested by police.
Magistrate Sharon Freund slammed Koschel’s 40-second speech, in which he twice called Jews the “greatest enemy”, as clearly anti-Semitic and vilifying a vulnerable community.
The offensive, abhorrent language was then followed up by neo-Nazi symbolism, the magistrate said.
He also called for the release of jailed neo-Nazi lieutenant Joel Davis.
“He intended to incite hatred amongst the crowd he was addressing,” Freund said.
“He intended to incite hatred against the Jewish community and Jews in general.”
That mass shooting took place six weeks before Koschel took the stage, the magistrate noted.
The denunciation of these types of anti-Semitic remarks made in a public forum on such an iconic national holiday was essential, the magistrate added.
“A clear sentencing response is required to convey that the invocation or normalisation of hatred directed at the Jewish people … will not be tolerated,” she said.
Koschel had also shown no remorse, contrition or insight into his offending.
His non-parole period of nine months will expire on October 25.
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