Australia has rejected far-right provocateur Candace Owens’ visa application ahead of a planned national speaking tour, with the immigration minister, Tony Burke, saying she had the “capacity to incite discord”.

The US conservative influencer and podcast host, who has advanced conspiracy theories and antisemitic rhetoric including minimising Nazi medical experiments in concentration camps, will be blocked from coming to Australia after the federal government voiced alarm about her record.

“From downplaying the impact of the Holocaust with comments about [notorious Nazi doctor Josef] Mengele through to claims that Muslims started slavery, Candace Owens has the capacity to incite discord in almost every direction,” Burke said on Sunday.