In the bible, Judas shows the Romans who Jesus was by kissing him. This could be him telling Rodolpho to back away from Catherine in a more ironic fashion. Having said that, a lot of people would just say that Eddie had kissed Rodolpho and Catherine because he was drunk and it was his true emotions coming out in the opening. By this point in the play, the audience does not know what has come over Eddie. We have just seen Rodolpho deliver a tender, sweet romantic scene with Catherine telling her that he loves her and wants the best for her, and found the scene ending with an all out argument and kiss with Eddie.
We feel embarrassed for Eddie, but even more embarrassed for Rodolpho because Eddie is saying in front of Catherine that he thinks that Rodolpho is gay. We feel more sympathy for Rodolpho at this point and we start to see Eddie as a ruthless, jealous drunk who does what he thinks is best for himself. Our respect for Eddie which we had at the beginning has dropped considerably. The scene where Eddie informs the immigration bureau about Marco and Rodolpho is one of the most dramatic in the entire play.
It shows Eddie Selling his soul to get Catherine, because informing on family or on another Sicilian was seen as the worst thing possible to do. His very own society would spit on him and disown him for doing this. Eddie is breaking the Sicilian code of honour by contacting the immigration bureau and telling them about Marco and Rodolpho. The things that are seen almost as worse as murderers and thieves in Sicilian society are stool pigeons (people that tell the police/authority figures about what illegal activities go on in the community).
Eddie is motivated in this scene by his pure lust for Catherine and his hate which has now spiralled out of control for Rodolpho. The scene consists of a huge fight between Marco and Eddie in front of the whole neighbourhood, and the public humiliation of Eddie. The entire neighbourhood turns against Eddie for what he has done to Marco and Rodolpho, and Eddie is now by this point everything he has stated that he hates (the person that ruins families, the stool pigeon etc). His selfishness contradicts Alfieris wise advice from the beginning. He does everything that Alfieri says would eventually lead to his demise.
After this scene, Eddie is seen as an ogre and the audience loses all their respect for him. Alfieri is now seen as everything that Eddie is not. Alfieri is guided by his morals which are often paramount to all of his actions, and Eddie has lost all of his morals and sold his soul so to speak. The reason why Eddie is portrayed this way could be because of the fact that Arthur Miller was opposed to the McCarthy witch trials and had first hand experience of what a grass can do to a society/person (his friendship with Elia Kazan which ended in Arthur Miller being blacklisted).
Eddie is portrayed as a man who has lost all his morals and as someone who had informed for their own personal gain. This could be because Arthur Miller wanted to give the message that informing is something that immoral people do for their own personal gain. In the end of the play, Eddie is stabbed by Marco, but is really a victim of his own fatal flaws. He follows the standard classic tragic hero trajectory and dies because of his own ignorance his submission to his wants and desires which had been suppressed in the past.
Eddies life is like a classic Greek tragedy, and shows Mans lack of understanding of whom he is and his blindness in the face of destiny. He is an overall good guy who becomes a victim of his one fatal flaw. We do not feel sympathy for him at the end because we feel that he deserves death for what he has done to Marco, Rodolpho and his family. In conclusion, A View from a Bridge shows how one man can start off as a good, honest man and end up as a ruthless, jealous victim of himself.