 The younger Katter was heavily influenced by his father's labour and trade unionist politics, and by his father's belief in equality for people of all races.In August 2011, Bob Katter Jr, Katter's half-brother and member of Parliament representing the seat of Kennedy, like his father before him, appeared at a right wing Christian rally at the Great Hall in Parliament House and decried same-sex marriage.Carl reportedly watched on television as his half-brother mocked same-sex marriage and suggested that it "deserves to be laughed at and ridiculed."