The attack on Paul Pelosi was not an isolated incident

An intruder broke into the California home of House Speaker Nancy Pelosi early Friday and attacked her husband Paul Pelosi with a hammer while she was in Washington, DC. Paul Pelosi underwent surgery “to repair a skull fracture and serious injuries to his right arm and hands,” but is expected to make a full recovery, according to a statement released by the speaker’s office.

The suspected attacker, David DePape, who has a history of sharing conspiracy theories on social media, said he would wait “until Nancy got home,” according to a source briefed on the...