SAN FRANCISCO — Transit and public safety officials said they are aware of a conservative activist’s call for an unpermitted rally and effort to block the Golden Gate Bridge starting with Wednesday morning’s rush hour.

John Walters Monroe announced plans to host a ‘March against Marxism’ event 9 a.m. to 2 p.m. from the 900 block of Lincoln Boulevard at Highway 101 onto the bridge, forcing traffic to wait until the city of San Francisco “agrees that ‘Antifa’ is a terrorist organization,” according to a Facebook page posted by a group called Conservative Rustles.

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The page, which describes the event as “peaceful and loving” and is tagged for discovery within Facebook as “free admission” and “kid friendly,” tells parents to bring their children, speculating that anti-fascists “wouldn’t dare hurt the future generation of America, or would they …?”

When the page went up late Sunday, its invitation included outreach to members of the pro-white organization, Identity Evropa. That outreach was initially scrubbed Tuesday afternoon, but added back later with additions: “The Alt Right, Identity Evropa,and other Southern Nationalist groups will be in attendance.”

In a Southern Poverty Law Center profile of group founder Nathan Damigo, the watchdog organization says Identity Evropa “focuses on recruiting college-aged, white students in order to discuss ‘race realism’ and white interests.”

As of Tuesday evening, the page listed no one as interested or going to attend, and the group’s page had five likes and 12 follows.

The Golden Gate Bridge Highway and Transit District is aware of the post.

“No one has applied for a permit for an event, but we’re monitoring the situation,” Spokeswoman Priya Clemens said. “Events are only permitted on the sidewalks and plaza areas. It’s obviously illegal to stop traffic on (the) roadway of the Golden Gate.”

The California Highway Patrol said protests on roadways “is not only unlawful, but also extremely dangerous because it puts protestors, motorists, and first responders at great risk of injury or death.”

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“We will continue to work closely with local officials ahead of any future events in California and stand ready to take action to protect public safety should any demonstration become violent,” CHP Officer Andrew Barclay said.

Contact George Kelly at 408-859-5180.