Originally Posted by StocktonFan
trolling: inciting a response
bullying: inciting negative/harmful personal remarks
one can troll by bullying
Trolling: Inciting anger/frustration/annoyance in target
Bullying: Inciting fear and possible physical/mental pain in target
Starting an argument against someone's beliefs just for the sake of getting riled up is trolling.
Threatening to hurt or actually hurting someone over their beliefs is bullying.