Sarcasm is an adjusted stress reaction.

OK, "scum" is a tad harsh. They just look a bit like the old "country clubbers" that used to lead the Grand Old Party here. These days the so-called Tea Party¹ is an attempt to rebrand some of that ideology in a more populist way (& downplay the Religious Right wowser² stuff). Obviously I'm on a different side; I'm not favorably impressed by their economic plans.

The "supply-side economics" in Wikipedia's Liberalism_in_Australia page is a red flag. Also I have a generally dim view of anti-trade-union politics given my own country's history. Hence the unhelpfully scornful epithets.

1 The Tea Party is really just part of the GOP--which is also the Republican Party; we have only two official parties but apparently proliferate names.
2 I rarely get to use the word wowser & I may have used it incorrectly. Sorry if this is offensive.