Two animal rights activists chained themselves to a fence along the chuckwagon racetrack at the Calgary Stampede Friday night.

The protesters, acting on behalf of the Vancouver Animal Defense League, delayed the first night of the GMC Rangeland Derby by more than half an hour, reports the Calgary Herald.

A YouTube video capturing the protest shows the activists holding signs that read "Blood Sport" and "No More Dead Horses."

Eventually the protesters were covered with a black tarp until Stampede officials could cut loose their chains, reports 770 News.

Stampede spokesman Kurt Kadatz told Vancouver radio station CKNW there were two people who didn't want the races to be held — and 16,000 who did.

However, a spokesman for the activist group told the Calgary Herald they plan to "protest vigorously" throughout the 10 days of Stampede.

“The problem with the races is 60 horses have died horrifically in chuckwagon races (at the Calgary Stampede) since the 1980s,” said Len Goldberg.

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  • Crowds gather to watch the Calgary Stampede parade, Friday, July 4, 2014.

  • Young buckaroos make ther way to the Calgary Stampede parade, Friday, July 4, 2014.

  • Parade Marshall William Shatner waves to the crowd during the Calgary Stampede parade, Friday, July 4, 2014. T

  • Moms and their children attend the Calgary Stampede parade, Friday, July 4, 2014.

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  • Prime Minister Stephen Harper poses with people dressed as horses at the Calgary Stampede parade, Friday, July 4, 2014.

  • Liberal leader Justin Trudeau greets the crowd as he attends the Calgary Stampede parade, Friday, July 4, 2014.

  • Parade Marshall William Shatner waves to the crowd during the Calgary Stampede parade, Friday, July 4, 2014.

  • Prime Minister Stephen Harper attends the Calgary Stampede parade, Friday, July 4, 2014.

  • Liberal leader Justin Trudeau attends the Calgary Stampede parade, Friday, July 4, 2014.

  • Prime Minister Stephen Harper, right, meets Liberal leader Justin Trudeau, left, and his daughter Ella-Grace while attending the Calgary Stampede parade, Friday, July 4, 2014.

  • Prime Minister Stephen Harper, right, and his Laureen, far left, watch a fireworks display while attending the Calgary Stampede parade, Friday, July 4, 2014.

  • Prime Minister Stephen Harper is seen through a wagon wheel as he attends the Calgary Stampede parade, Friday, July 4, 2014.

  • Calgary mayor Naheed Nenshi waves to the crowd during the Calgary Stampede parade, Friday, July 4, 2014.

  • Members of the RCMP march in the Calgary Stampede parade, Friday, July 4, 2014.

  • A vintage car carries dignitaries during the Calgary Stampede parade, Friday, July 4, 2014.

  • NEXT: Amazing Facts About The Calgary Stampede

  • 400,000

    The number of people who will stand, sit or kneel along the parade route to take in the show. According to the Stampede, that’s more cowboys and cowgirls than take in the rodeo, Rangeland Derby and Grandstand Show combined over all 10 days of the Calgary Stampede.

  • 2 Million

    The number of people who will watch the parade regionally and nationally on television.

  • He's A Natural

    This year's parade marshal, William Shatner, knows his way around horses. Shatner raises American Saddlebreds, a breed dating back to the American Revolution. Shatner rode his mare, Great Belles of Fire, when he played Captain Kirk in Star Trek Generations. "I really am into horses....I ride and compete <a href="http://www.huffingtonpost.com/ellen-sterling/william-shatner-at-almost_b_4591983.html" target="_blank">looking for a blue ribbon</a>," he told HuffPost earlier this year.

  • 2 Hours

    The time it takes for the parade to pass any one point on the route.

  • 750

    The number of horses that take part in the parade.

  • 3,000

    The number of humans who participate as part of the Calgary Stampede parade's 167 entries.

  • 2 Tons

    The amount of manure animals will create throughout the course of the parade.

  • 40 Years

    The length of time some Stampede volunteers have been helping organize the parade.

  • Famous Folk

    To celebrate the 50 year anniversary in 1962, the Stampede procured Dale Evans and Roy Rogers to ride in the parade.

  • 75,000

    The amount of people the first ever Stampede parade, which at the time was called Frontier Days and Cowboy Championship. Attendance for the ‘country fair’ clocked in at 100,294, double Calgary’s population at that time.

  • 12 Feet

    The height that Stampede floats must not exceed – otherwise they’d get stuck under Calgary’s Plus 15 walk way system.

  • 2 P.M.

    The time the day before the Stampede parade that spectators have been known to camp out along the route in order to get a good seat.

  • Continue through for photos of the 2013 Calgary Stampede parade.

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  • Chris Hadfield on the route

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  • @Premier_Redford gets on her horse, Butch -- she's ready to ride + this parade is about to start!

  • Chris Hadfield: the only guy here more popular than Nenshi.

  • Cowboy hats instantly make cops 100% hotter. #stampede

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  • The star of the show has arrived = Chris Hadfield.

  • Nenshi is ready to start the #StampedeParade

  • I guess these seats are saved?!? #stampedeparade #stampede

  • #awesome line dancing by the chinook country line dancing club! #stampede is here! Yeehaw!!!!

  • Something you never see in Toronto..Calgary Police on #Stampede Parade route giving kids photo ops on the motorbikes.

  • People begin to line the parade route

  • Roughly 250,000 people expected to take in #Stampede101 parade

  • Here we go Hell or High Water

  • Kinda love the teepees on the Bow. Brilliant!

  • She's a way better rider than I am! Great to see @premier_redford at the parade!

  • PM Stephen Harper awaits the beginning of the #Stampede101 parade.

  • Calgary, stand up. Your first responders' passing.

  • YAHOO!