My brother is an alcoholic?

And my parents are a continuous crutch from him. My dad lets him live in his rent house for free. My mom is always covering his bills. They both give him money. He is always broke. He get plastered AT LEAST 4 times a week binge drinking paying for his friends drinks and of course driving. He is 29 years old and can barely hold dead end jobs. His free house is a filthy wreck...sometimes he wont even bathe himself. He acts very ungrateful... he EXPECTS money without a please or thank you. You cant say anything to him w/o him exploding. My parents have continually griped and complained about him to me for so long. They constantly say they are not helping him anymore but they always do. I cant even be around any of them anymore. It especially eats me up cause I feel like my parents don`t see it at all and won`t start showing tough love to help him. It`s tearing the whole family apart. I feel like my parents are turning a blind eye to the severity of it. They think they feel guilty for not helping him but have no clue how guilty they could feel if he winds up in jail, dead, or killing someone else. I love my brother. I love my family. Where do I start? Has anyone else dealt with this?