A London court ordered a man to be hospitalised indefinitely after he attempted to burn down the 18th-century Exeter Synagogue.
Tristan Morgan, 51, was caught on surveillance cameras pouring a fire accelerant into the synagogue building and setting it alight.
The court heard that Morgan laughed after he was set on fire during the arson attack.
After he was arrested at his home, Morgan told officers: “Please tell me that synagogue is burning to the ground. If not, it’s poor preparation.”
Prosecutor Alistair Richardson said Morgan had a “deep-rooted antisemitic belief, embodied in a desire to do harm to the Jewish community and an obsession with abhorrent antisemitic material.
Richardson said Morgan, a folk singer, made songs “exhorting others to violence” against the Jewish community and contained lyrics that “reveled in the degenerate views of Nazi Germany and white supremacists.”
The blaze caused £23,000 worth of damage to the building.
The synagogue in Exeter, an ancient city in southwest England, is the third oldest in the country. It was dedicated in 1764.