Mr Freer had asked what more could be done to encourage police to use public order powers to combat the rally.
Far-right activists plan to demonstrate in Golders Green, north-west London, on July 4.
A group founded to oppose the planned extremist protest “against Jewish privilege” launched on Monday with cross-communal support.
Around 50 people attended the Golders Green Together event , with leaders from Muslim, Sikh, Christian and Jewish organisations voicing their strong opposition to the proposed demonstration.