No trolls! You're a troll if you consciously post something to purposely incite argument and cause rife amongst your class members and then you sit back and watch the battle. The difference between trolling and debating is that trolling has the intent of causing no productive outcome other than anger and hate and debating is taking on heated discussions and loaded topics with the aim of learning a new perspective or coming to some form of resolution, agreement, or understanding. Trolls aren't looking for enlightenment, just reactions. Trolls don't create that "safe space" for the difference in opinions.