Special Education is important everywhere! Today is the day to pay tribute to it.
Share progression, successes, and failure. Reinforce the idea that failure is a part of life. It becomes less of a hurdle and children will be able to comfortably progress without the crippling fear of failure.
Talk about the hard stuff. Special-Education children need more care and attention, so talk about it! Don't shy away; celebrate their independence. Shying away from the "ugly" or "bad" is never a good idea. By doing this, you are spreading awareness without harmful intent, and we can guarantee you that at least 3 parents in the world think, feel, act, and relate to your difficulties.
If you're not in the Education industry... have no fear. Someone is bound to have a Special-Education child in your company or in your social feed, so a simple "Happy National Special Educations Day" will do wonders for engagement.