You don't have to be a grown-up to advocate. You have to care about something and, most importantly, you have to act on it. So teach your children well. Get them involved in whatever issue is central to your life.
This is part two of an interview with Paula Durbin-Westby, an (at times) non-speaking autistic adult who made a YouTube video as an example of what happens when she tries to speak during periods when she cannot.
"I think the phrase 'non-speaking at times' captures my experience and also that of others who do have speech capabilities but can't always access them. Just because one can speak at times does not mean speech is a reliable form of communication for that person."