drug awareness campaign?

it started with this green ribbon campaign in primary school and I remember literally wearing a green and white ribbon on our pinafores. I think this is a drug awareness campaign. can't really remember though. nowadays, there's so many different colour campaigns. there's the yellow ribbon project, there's pink ribbon for breast cancer awareness etc.

so this is supposed to be a green ribbon pin, sorry the colour turn out bluish. but well, this post is to show how these kind of initiatives have involved and sprout up over the years. so what cause are you supporting?