I am possibly conflating issues but: 'The Land From the River to the Sea' is a jingoistic song amongst the likes or 'Land of Hope and Glory'. Neither are really acceptable but one is featured on British television at least annually.
If someone stood up in Trafalgar Square singing the latter week, they'd probably get a round of applause. I would say not so much the former.
Free speech or jingoism has to be 'understood' on all fronts - and where can we legitimately draw the line?