Home Affairs Minister Peter Dutton has ramped up the pressure on websites spreading "evil" hate messages after more than 20 people were killed in a suspected terrorist attack in the US.
Mr Dutton said many online media companies were operating out of Russia or other countries where the rule of law does not apply in the same way as western democracies.
He said the depth of hatred was damaging children and being proliferated through online media, which operates on different rules to traditional platforms.