The 43-year-old drew the hateful symbols and then gave a Nazi salute, which was captured on surveillance videos.
The director of security at Temple Israel was injured in the attack, the Reform congregation said.
Elijah Alexander King allegedly used his phone to search for shuls 10 minutes after sending the threat.
The Turning Point USA founder has been an outspoken supporter of Israel in conservative politics.
Wesley LePatner remembered as “the most loving wife, mother, daughter, sister and relative.”
Authorities have not corroborated widely-spread allegations that the shooter shouted “Free Palestine” or anything about terrorism.
An Egyptian national wounded 12 at a pro-Israel rally with firebombs; he told police he intended to kill “all Zionist people.”
Allegations against the California state school include fake blood thrown on Jewish students, the theft of an etrog from a Sukkah and vandalism of a campus building.
