Church Door, Boston

Photo of this beautiful composition of six pointed stars from a church door in Boston MA, (US) is courtesy of "pollenymph" who published it on Flickr. 

organizations involved with Israel

There’s a lot of Stars of David in logos of organizations involved with Israel:

Maoz, Messianic Jews fellowship, has a blue Star of David in its logo

Christian Friends of Israel have a Menorah in the shape of a Star of David in its logo

Hope for Israel, for reconciliation between Jew and Palestinian, have a Star of David and a dove on its colorful logo.

Christian Friends of Israeli Communities have an azure Star of David on a blue background.

Why Israel Canada has a white Star of David on a blue background

Yashanet has a yellow and brown Star of David on a white background

Messianic Jewish Net has a shadow of a Star of David under its name www.messianicjewish.net

Judaism 101 FAQ has an azure triangle interlaced with a blue and black triangle

Jewish Community has a white Star of David on a blue contour.

Ebenezer Fund has a white Star of David on a globe between two hands

Shavei Israel has a Star of David composed of blue triangle on a gray one

Victor Mordecai has a yellow Star of David on a red globe

Jewish music has a red music note on a white Star of David

Shalom Peace has one big blue Star of David with a fish in the middle and many small ones on the margins

Israel Ministry of Foreign Affairs has a white and blue composition of a Star of David with white arrows.

My-Israel has a gold Star of David on a blue background. 

Chufut-Kale

Photo of Stars of David in the Karaite Synagogue at Moshav Matzliach is courtesy of Neria Haroeh who published it in Wikipedia - until I saw it I didn't know that Kareites use this symbol along with the Menorah symbol.