But those people shouldn’t be feeding the troll. Don’t give them the attention that they desire.
It's a matter of individual judgement though. I mean, it depends what one thinks the point is of debating/arguing things on here at all.
Personally I sometimes feel it's easier arguing with those I 100% fundamentally disagree with, which includes people who get labelled 'trolls'
It's much more uncomfortable to argue with someone you agree with on some topics but not others, or if it's an issue one isn't certain of one's own opinion about. I'm constantly tempted to pick fights with liberals - who often seem rather right-wing to me - but almost always decide not to because I'm very uncertain of my views about liberalism vs the left.
Really doesn't help that the US "left" is so far to the right that the actual right occasionally opportunistically employs leftist arguments purely in order to oppose them. That's really confusing.
(When they aren't resorting to completely crazy conspiracy theory territory, as if that's the only place left to go when the 'left' is occupying the territory where the mainstream moderate right ought to be)
On the other hand, sometimes one loses patience and concludes its pointless engaging with someone when you are never ever going to agree or when they don't argue honestly and/or keep saying the same things over and over while ignoring all counter-points - then the ignore list gets used.