I will leave it to others to discuss the precedents for Aaron Bushnell’s self-immolation outside the Israeli embassy in Washington, from Thích Quảng Đức to Norman Morrison to Mohamed Bouazizi to Irina Slavina to Wynn Alan Bruce. Yes, this has happened before.
The world has been a terrible place for too many for too long, and for that reason, the rare few most inclined to feel that terror, to breathe in its ashes, have found no other option but to set themselves on fire in protest. So that others may be forced to breathe in some of those ashes too.