Man With ‘Joker” Inspired Rifle Arrested After Opening Fire And Running In Traffic Near President Trump’s Golf Course

This is concerning.

A man with a “Joker” styled rifle was arrested, opening fire and proceeding to run in traffic near Trump National Golf Course in California.

According to authorities, the man’s rifle had the inscription “Why so serious?” which is a famous line by the villain Joker in the movie The Dark Knight.

Fox News had more details to share on the shooting and identified the man:

Deputies in Los Angeles have arrested a 36-year-old Arizona man they say was running through traffic near the Trump National Golf Course in Rancho Palos Verdes, California — while carrying a loaded rifle painted to look like a toy inspired by The Joker character from “Batman” and wearing a heavy-duty ballistic vest.

Witnesses reported seeing the man, identified as Sean Steiner of Glendale, Arizona, hiking in the area with a duffel bag, a step stool and a rifle, before he allegedly ran into traffic on Palos Verdes Drive South around 5 p.m. on March 29.

Deputies arrived to find the rifle painted green and purple and emblazoned with the words “HA HA HA HA” and the line made famous by the late Heath Ledger, “Why so serious?”

The tip had also been painted orange, “resembling a toy gun,” according to authorities.

“Not only was the rifle loaded with a round in the chamber and a full magazine inserted… he admitted he had just fired one of the pistols near the landslide area to ‘get some anger out,'” according to a statement from the Los Angeles Sheriff’s Lomita Station.

Here are photos of the suspect and the rifle:

A man was arrested after being found armed with multiple weapons near a busy area in Rancho Palos Verdes, close to the Trump National Golf Course.https://t.co/XQHG5lChvM

— FOX26 News (@KMPHFOX26) April 14, 2026

The New York Post reported Steiner had more weapons on him at the time of his arrest:

At the time of his arrest about a week ago, officials say Steiner was armed with a loaded semi-automatic short-barreled rifle, round already chambered and magazine fully loaded, as well as a loaded revolver.

The rifle was painted green and purple and marked with phrases including “Why so serious?” and “Let’s put a smile on that face,” giving it a distinct “Joker”-style appearance.

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Investigators also recovered additional firepower, including two loaded handguns, high-capacity magazines, extra ammunition, a ballistic vest and an AR-style pistol with an orange tip designed to resemble a toy weapon.