I've not been here that long, but I've just suddenly noticed a couple of people coming here, it seems, simply to disagree with things...not to try to learn more (eg. 'I don't understand why...can you explain it), but to be rude, unpleasant and aggressive.
I know this is to be expected, but I'd been surprised not to see it here up until now, and now a sudden influx. Is this normal? Will it settle down again at some point and make the topic a nice, happy, safe place to be again?