" it takes an idea to turn someone to terror and it's now impossible to stop the flow of ideas."
So we have a population that is more likely to have one of it's own go and join the fight in Syria than to join the Australian Defence Force (there are 98 persons in the ADF who identify as Muslim).
This population has a clear preference for supporting foreign terrorist organisations over supporting the nation in which they live.
To point that out is apparently racist - despite the fact that Islam is a belief system and not a race. So when people can't find a voice for fear of being howled down and labelled racist, they turn to the ballot box to make their point - hence why we have Pauline Hanson here, Nigel Farage in the UK and Donald Trump in the US. These politicians are an outlet for the sensible people who can see that mass immigration programmes of people who hold belief systems at odds with the enlightened democratic west are not a good idea.