To Barry : Sydney hostage crisis brings on terrorism again . But this was n't Australia 's first brush with terrorism , he says . Dozens of Australians were killed in Bali bombing in 2002 , he adds .
Max Barry : Sydney hostage incident brings home terrorism threat . But this was n't Australia 's first brush with terrorism , writer says . Dozens of Australians were killed in Bali bombing in 2002 , Barry adds .