They stood quietly hoisting their signs, but their message and the honking it inspired resounded for several hours Monday.
More than two dozen protesters, many of them eyewitnesses to the anguish caused by oxycodone addiction, were targeting one of the many clinics they call pill mills.
Waving signs that read "Close the Clinics, Open Rehab," "Stop Killing Our Children," and "Pill Mills Kill," the protesters vowed to continue with monthly demonstrations until legislators make the clinics go away.
The clinic, the Pain Relief Centers of South Florida, was closed on Monday.
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"It's just one small victory," said organizer Renee Doyle, whose 27-year-old son died last year after he walked into traffic in a drugged-out state. "They will probably be open again tomorrow, but we'll continue to come back."
Broward is the nation's capital in oxycodone sales, dispensing more than 9 million tablets in one six-month period in 2008, according to the U.S. Drug Enforcement Administration. Broward County has 154 pain clinics, Palm Beach County has 122, and there are 942 statewide.
Monday was the second time the group STOPP NOW, organized by Boyle and two other Broward health care workers who have been touched by drug addiction, picketed the same clinic off Griffin Road. The company that owns it has nine more, mostly in South Florida.
The first STOPP NOW protest, on Aug. 24, drew about a dozen participants.
Twice as many showed up Monday, and found support in a seemingly endless parade of vehicles — including a Broward fire-rescue truck — that honked to cheer their efforts. Some motorists pulled over to personally thank the group.
The clinic, owned by Integra Health Services, is operated by chiropractors David Romano and Michael Rechter. They could not be reached for comment on Monday despite messages left at their offices, and at the company's Fort Lauderdale headquarters.
Doyle, a nurse, and the other two organizers, Janet Colbert and Joy Saghy, started their group STOPP NOW, Stop the Organized Pill Pushers, in August.
The three women said they were not surprised by the many strangers who showed up to stand alongside them on Monday. Most had searing personal stories to share.
"A lot of people know about the pain clinics, but many of them don't know how there are kids and other people who are suffering because of them," said Mike Deeson of Davie.
Deeson held up a sign memorializing his cousin, Arlo Deeson, 28, who died in 2009 after taking a deadly dose of Oxycontin and Zanax. He left behind a 3-year-old son.
Dee Dee Roache, a nurse who heard about the protest over the weekend, said she was there on behalf of her son, Wayne, 27, who overdosed and died in 2003.
"I've taken care of so many people in my life, and I couldn't take care of my own son," said Roache. "The ones that need to be targeted also are all these politicians who make it possible for places like this to open. These ladies have an uphill battle."
Colbert, one of the organizers, said future monthly protests will target clinics in Hollywood and Oakland Park. The group also plans to be a constant pain to local politicians who, it says, have the ability to alleviate the problem, but do nothing significant.
The group will start using its website to list elected officials and their actions — or lack thereof — when it comes to regulating and closing pain clinics.
"It will be like a report card for each of them," said Colbert. "If they do nothing about it, they should feel ashamed of themselves."