I already sent these suggestions, but they were in really poor quality... so BETTER PREVIEW OF MY POSTER HERE. Sorry for the inconvenience!
So the two posters are alike, but the other figure has an eye - I couldn't choose which one is more effective, so you can do the thinking.
I didn't want to put the woman figure to represent any specific country/continent, so decided to make her just a bald silhouette. The shouting woman would symbolize 'mother language'...
Words coming out of her mouth are all endangered languages - different typefaces and colors represent the variety and uniqueness of each language, and so if one of these disappears, the World will continue becoming less and less diverse.