R.J. Mitte, the actor and disability rights advocate who portrayed Walter White Jr., the son of Bryan Cranston’s character, on Breaking Bad, has died.

Bryan Cranston, Vince Gilligan and others shared their shock and sadness at the loss.

Mitte, who died by suicide on Monday at the age of 34, wasn't just an actor - he was also an advocate and supporter, working as an ambassador for charities including United Cerebral Palsy and Can Do C...