There are some young attractive hijab wearing muslim women who are acting as good will ambassadors for islam so that we will be convinced that islam is *nice*, *charming*, *modern*, *nothing to fear* etc, etc, etc. These pictures make people aware of the reality not the slick CAIR propaganda. People need signs with many of these pictures to counter protest the pro muslims especially for those head-in-the-clouds academics or clergy. Many different pictures will show that these horrific crimes are not an isolated incident but a tragic cultural pattern.
A variation on this: out in public, you can spot the full-niqab/hijab-wearing Muslim girl with a female companion of the same age, but this one is sporting makeup, uncovered hair, a bared midriff and shredded jeans. It's propaganda of the same sort: "Look, we're moderate. We tolerate other Muslim girls who don't dress the same way. Don't fear us."
Don't be fooled.