Complex sentence: But he wasn't all that interested in multiculturalism, preferring to celebrate a multi-ethnic Australia where people would sign up for the local set of values which he saw as an amalgam of humour and high-mindedness, of democratic spirit and egalitarianism.
Split into simpler sentences: But he wasn't all that interested in multiculturalism, preferring to celebrate a multi-ethnic Australia where people would sign up for the local set of values. Which he saw as an amalgam of humour and high-mindedness, of democratic spirit and egalitarianism.