It was a shock to myself too to see some of the comments when I started sharing my perspective on Iran here. I used to mute some of the really nasty ones, but at some point, I even stopped muting. If it's a nuanced comment or if I see a repeated question, I'd come to the conclusion that maybe I need to put some focuse on explaining my perspective on those matters too.
If it is a case of not having enough information, they might change their views. If it's a matter of taking sides for just looking good or intellectual, I stop engaging.