Police in Laval, Que., are being accused of using excessive force while arresting a black man, after video of the arrest was shared widely online. Laval police say the use of force was justified.

A lecturer in Supply Chain and Operations Management at UBC's Sauder School of Business looks at how the uncertainty around tariff threats and their timing is affecting B.C. businesses.

Samuel L Jackson on the Bill of Rights and on introducing Ramona Ripston at the ACLU Bill of Rights Awards at the Beverly Hilton in Beverly Hills, California on December 13, 2004. (Footage by WireImage Video/Getty Images)

Samuel L Jackson introduces 'The Little Focker,' Ben Stiller at the ACLU Bill of Rights Awards at the Beverly Hilton in Beverly Hills, California on December 13, 2004. (Footage by WireImage Video/Getty Images)

Samuel L Jackson at the ACLU Bill of Rights Awards at the Beverly Hilton in Beverly Hills, California on December 13, 2004. (Footage by WireImage Video/Getty Images)

Samuel L Jackson: 'Ezekiel 25:17' the politically correct version at the ACLU Bill of Rights Awards at the Beverly Hilton in Beverly Hills, California on December 13, 2004. (Footage by WireImage Video/Getty Images)

Sam Rockwell, Sam at the Premiere of Choke at New York NY. (Footage by WireImage Video/GettyImages)

Sam Rockwell, Sam at the Premiere of Choke at New York NY. (Footage by WireImage Video/GettyImages)

INTERVIEW: Barbara Broccoli on Sam Mendes at the Bond 23 Launch Press conference Skyfall at London England. (Footage by WireImage Video/Getty Images Entertainment Video)

Sam Rockwell, Paz de la Huerta, Sam at the Premiere of Choke at New York NY. (Footage by WireImage Video/GettyImages)

Chief Justice FREDERICK VINSON administering Oath of Office to US President HARRY S TRUMAN during Inauguration ceremony at East Portico, US Capitol Building / President Truman kisses Bible, then shakes hands with Chief Justice Vinson and...

INTERVIEW: David Morrissey on how he hopes the good luck on last year's closing film at the London Film Festival (Slumdog Millionaire) will be bestowed on Nowhere Boy. He talks about how little is known about this period in John Lennon's...

Aaron Johnson & Sam Taylor-Wood at the Nowhere Boy - London Film Festival at London England. (Footage by WireImage Video/GettyImages)

Sam Taylor-Wood & Aaaron Johnson at the Nowhere Boy - London Film Festival at London England. (Footage by WireImage Video/GettyImages)

Sam Taylor-Wood & Aaaron Johnson at the Nowhere Boy - London Film Festival at London England. (Footage by WireImage Video/GettyImages)

(EXCLUSIVE) Holding his brush like an old master, Sam the painting dog is the Leonardo Da Vinci of the canine art world. Using the lush surroundings of his home town of Eastern Shore, Maryland as his muse, Sam's paintings are attracting...

Richard Branson accompanies Sam Branson up the beach after Sam broke the world record while Richard failed in his attempt. Richard Branson and Sam Branson on the beach on June 30, 2012 in Folkestone (Footage by WireImage Video/Getty...

Jay Rasulo, Heidi Klum, Jamie Lee Curtis, Melanie Griffith, Antonio Banderas, Ted Samuels, Cathy Weiss Tom Bergeron at Children's Hospital Los Angeles Gala: Noche de Ninos on 10/20/12 in Los Angeles, CA (Footage by WireImage Video/Getty...

Jay Rasulo, Jamie Lee Curtis, Melanie Griffith, Antonio Banderas, Ted Samuels, Cathy Weiss Tom Bergeron at Children's Hospital Los Angeles Gala: Noche de Ninos on 10/20/12 in Los Angeles, CA (Footage by WireImage Video/Getty Images...

State of New Hampshire float on Inaugural Parade / US Marine Corps band marching, passing grandstand / First Lady LADY BIRD JOHNSON, President LYNDON BAINES JOHNSON, Vice President HUBERT HUMPHREY, and MURIEL HUMPHREY BROWN watching...

INTERVIEW: Rob Fried on the story idea and Sam Jackson's desire to work with Eugene Levy, Eugene and Sam seeming unlikely but becoming friends, and on Sam's comedic timing and Eugene's toughness at the 'The Man' Los Angeles Premiere at...

Samuel L Jackson at the Spike TV Video Game Awards at the Gibson Amphitheatre in Los Angeles, California on November 18, 2005. (Footage by WireImage Video/Getty Images)

INTERVIEW: Jim Gaffigan talking about coming from a comedic background, on rehearsing with other cast members and being directed by Sam Mendes, coming from a comedic background and shooting at the dog races. at the 'Away We Go' Screening...

SPEECH: Matthew 'Boi 1da' Samuels at the 24th ASCAP Rhythm & Soul Music Awards Honoring Sean 'Diddy' Combs And Mary Mary at Beverly Hills CA. (Footage by WireImage Video/Getty Images Entertainment Video)