Swartz's family says federal prosecutors and MIT "contributed to his death"
Swartz, 26, was found Friday after he hung himself, ME's office and his family says
He helped pioneer the Internet's icons of RSS and Reddit at a young age
Swartz then became an aggressive Internet activist, landing him in legal trouble
Aaron Swartz, an Internet savant who at a young age shaped the online era by co-developing RSS and Reddit and later became a digital