Kokesh, left, in Philadelphia with National Park Service notice about marijuana use. (Via Facebook)

Adam Kokesh, the libertarian activist who is planning to lead a group of loaded-rifle-toting marchers through D.C. on July 4, is currently sitting in a federal detention center in Philadelphia following his arrest there last weekend. Kokesh was arrested Saturday while participating in the “Smoke Down Prohibition,” his staff announced on his Facebook page.

Kokesh and other participants in the pro-marijuana demonstration were taken into custody about 4:20 p.m.—when else?—on Saturday after sparking up joints on Independence Mall in downtown Philadelphia. Four others were also arrested by U.S. Park Police.

Since Saturday, Kokesh’s Facebook page has turned into a sea of “Free Adam!” comments. Several of his supporters gathered Monday morning outside the holding facility where Kokesh is currently detained. Kokesh, 31, is scheduled to go before a judge today at 1:30 p.m.

Kokesh’s fans expect him to make bail, but just in case, thought is already being given toward his provocative plans for July 4 in D.C., where he plans to lead a group of gun rights supporters across the Arlington Memorial Bridge from Virginia and into the District, where it is illegal to carry a firearm around the city. “THIS MARCH WILL GO ON NO MATTER WHO HAS TO LEAD IT!!” his Facebook account blared.

Here’s grainy, fuzzy video of his arrest:

At last count, more than 4,500 people have signed up to attend Kokesh’s July 4 demonstration (he expects about one-tenth of Facebook RSVPs to actually turn out), though in an interview with DCist last week, he said that some of the event’s parameters have changed. Rather than blazing a trail around the National Mall while hoisting loaded rifles in the air, Kokesh said that the march will traverse the Memorial Bridge up to the District line. Metropolitan Police Department Chief Cathy Lanier has said that her officers as well as Park Police will be deployed to meet Kokesh’s group on the bridge.

“There are two options,” Kokesh said last week. “We’re going to be allowed to march, or we’re going to march up to the line, have some words, and turn around.”

The latter seems more likely, considering Lanier’s statements, though Kokesh is still volunteering himself to be the test case for attempting to enter D.C. while carrying a gun. “I volunteer myself to be the liaison,” he said.

Assuming, of course, he’s out of the Philadelphia jail by then.