Tbh these methods also apply to real life, but I think anytime we're confronted with something that elicits strong emotions, it's important to slow down and ask:
1. "Is this deliberate ignorance, or just casual incompetence?" (bigotry = automatic no tolerance)
2. "Is the person on the other side able to engage in discussion in good faith?"
3. "Am I able to talk to them and extend good faith?"
If #1 is deliberate ignorance, then tread carefully. If it's casual incompetence, and #2 or #3 is a "no", then you shouldn't engage at all because no one will be heard & no bridges are built. And of course, if it's bigotry then block/report/ensure proper consequences are had so they don't have a space to spread hateful speech & ideologies.
Be mindful on the internet & make sure to make your words & presence count.