U+2721 Star of David

The Wikipedia has the following information about this codepoint:

The Star of David (Hebrew: מָגֵן דָּוִד, romanized: Magen David, lit. 'Shield of David') is a generally recognized symbol of both Jewish identity and Judaism. Its shape is that of a hexagram: the compound of two equilateral triangles.

A derivation of the seal of Solomon was used for decorative and mystical purposes by Muslims and Kabbalistic Jews. The hexagram appears occasionally in Jewish contexts since antiquity as a decorative motif, such as a stone bearing a hexagram from the arch of the 3rd–4th century Khirbet Shura synagogue. A hexagram found in a religious context can be seen in a manuscript of the Hebrew Bible from 11th-century Cairo.

Its association as a distinctive symbol for the Jewish people and their religion dates to 17th-century Prague. In the 19th century, the symbol began to be widely used by the Jewish communities of Eastern Europe, ultimately coming to represent Jewish identity or religious beliefs. It became representative of Zionism after it was chosen as the central symbol for a Jewish national flag at the First Zionist Congress in 1897.

By the end of World War I, it was an internationally accepted symbol for the Jewish people, used on the gravestones of fallen Jewish soldiers.

Today, the star is the central symbol on the national flag of the State of Israel.