"How are we going to enforce this? By asking the community to do so. Gentle reminders by peers are the best way we know to make the culture better." I like this approach because this, itself, is a gentle reminder to the community. Perhaps the best way is to avoid active censorship and encourage us to reflect upon ourselves. However; I do fear that this will, at least on some threads, lead to a passive aggressive string of comments that's no more helpful than what we are trying to avoid in the first place.