My suggestion would be for you to have a senior students meeting with the teacher privately and everybody voice their concerns, possible solutions, etc. and let the sensei know clearly that it is the sensei's responsibility to effectively handle this situation that has grown worse over the course of a year.
Thank you Sensei for your suggestion. All the sempai and I have told our teacher about the situation and examples. I clearly stated that he is going to hurt some one or he will get hurt. Yet He still says we will "Be harmonious" and be "best friends" on the mat. I came to my Sensei and asked him to deal with the situation but was told "We should talk to him". I think that sensei wanted to avoid the "talk" that I had to have with him. I am not sure why he hasn't done anything except a small slap on the wrist to this guy. I think that why I exploded at the "talk". I think our sensei wants everyone to practice no matter what. We have a small dojo with not a lot of members and they don't want to kick any one out. I honestly don't have any problems with this guy except his etiquette on the mat. I am surprised that he still comes to the dojo after the "talk".