I believe in the beginning that they are trying to hurt us, but I believe they are doing it for two reasons.
First, is that they associate us with their pain, that has been manifesting itself inside, for potentially years. As we all know, people who love other people can pay a high price for that closeness. Remember they are seeing us as a reflection of themselves and as such, they are very angry at themselves, thus the reason for the projection that they throw at us. We have a choice to let it get to us or not. In the outset, we are in shock and denial, not knowing what is going on. The MLCer has the upper hand, through confusion and manipulation. But, as time progresses, we gain the upper hand, if we learn and grow. We understand them and are able to diffuse the situation through love, understanding, compassion and detachment. They then lose all of the power that they had in the beginning. We have to also remember that they are playing a game with us, by trying to incite us through threats, manipulation and lies. Once we learn the game and respond instead of react, we take away all of their power.
Secondly they are attempting to hurt us in order to distance themselves from the intense pain and confusion that they have within themselves. We have to look at them as being an injured animal. Any animal that is injured has a natural tendency to lash out at anything and anyone that comes too close. They are only trying to protect themselves in their weakened state. MLCer's are doing the same thing, they are trying to protect themselves from further pain, by making sure that no one sees them in a weakened state. The state that they are in is pretty sorry, indeed. They have no sense of self, no hope, no joy, just nothingness. That has to be a very scary place to be in and since we have no frame of reference because we haven't experienced the same thing, there is really no way for us to understand what they are experiencing. All we see is the anger, the vicious attacks and the running away from everything that they used to be and hold near and dear to themselves. We take it as a personal attack on us, when in fact it isn't, but that is our perception. There is no way we can get in their messed up minds to really see what they see or feel what they feel. As you can see in many of the stories on this forum, as time passes and the LBS learns the game and how to respond and the MLCer gets further along in the process, things begin to change, most of the time for the better.