I've always said that awareness is only the first step, and that it's not ever enough to simply be "aware." It's certainly never, ever enough to be tolerant. What people think this month is about is slogans and slacktivism, Rain Man, and key chains.
The problem is that people don't know because it's invisible. You can't see it. And it's behavioral, so it must have a cure. Someone or something caused it. All we need is better parenting/medication/whatever.
For me, Autism Awareness has become synonymous with Autism Education. That includes educating myself as well as others about Autisms and the misconceptions people have about them. They don't realize that it's not about parenting or what's involved in schooling. They don't realize that it's a group of disorders and that there are several comorbid diagnoses as well as additional health problems with ASD's. They listen to whackadoodles like Jenny McCarthy and former doctor Andrew Wakefield are reliable and credible Autism specialists. They think people with Autism have no feelings, are incapable of emotion, don't smile, don't play, aren't happy, and live in isolation.
People just don't KNOW. But it's a popular thing right now to post on your FB status. You can slap on a bumper sticker or donate a couple of dollars to some vague charity with a puzzle piece for its symbol. But they don't educate themselves.
You'd be amazed at how many people sit up and lean forward when I talk about my daughter and how many questions they ask me. You'd be amazed at the hunger some people have to know more. Some people don't care to know more. They're comfortable being slacktivists. They're comfortable "showing" support. But if all they do is "show" support with a button or blue avatar, it's only slightly less bad than someone who is actively denigrating disabled people. Show support, but be active in that support. That's what I try to do.
*I realize my tone sounds bossy, but I'm not directing this at anyone in particular. It ended up me writing more free thought than answering the question.