It is indeed true that our beautiful land is also, unfortunately, a f***ing redneck wonderland. It's just shocking, sometimes.
I work in a secondary school, and in my more idealistic days I would try to engage with racist students (who you just know are parroting their parents). I would debate and argue and counter, but it's simply not feasible. It comes to a point where you're in a slinging match with an angry ignorant teenager which detracts from your professionalism, is terribly unedifying and isn't going to succeed anyway.
So now, when students tell me we should send them all home, or bomb them back to the stone age, or that our indigenous people are all bludgers and leeches, my "best" response is something like "I don't agree, but I'm not going to discuss it with you."
BTW That cumstain who used to be our PM was elected precisely because he pandered to the redneck element with his hardline anti-immigration policies. I mentioned it in the migrant crisis thread but you should consider researching the abhorrent offshore processing policies we employ - and then observe the masses who nod along or suggest that these draconian measures are too soft. And for a real good time, check out a Facebook group called "Things Right Wingers Say" - but have a barf bag handy when you do...