Shadow Assistant Minister for Citizenship Dave Sharma says One Nation Senator Malcolm Roberts and his party must be held accountable for his comments. “This is someone who did not disagree with the proposition that the Bondi terrorist attack, the worst Australian terrorist attack in our history, was staged or a false flag operation or something of that nature,” Mr Sharma told News24 host Sharri Markson. “I think that’s abominable. “I think his flirtation…with some of these wilder theories that are out there, I think, is deeply irresponsible for someone who holds elected office. “He should be held accountable for what he’s said, and dog whistled at.”