A police union in Calgary is telling its members to resist the police commission’s March 30 decision to prohibit the wearing of the “thin blue line” patch on uniforms. “We encourage each and everyone of you to wear this important symbol in defiance of the order from the commission,” John Orr, president of the Calgary Police Association (CPA), said in a letter to members obtained by CBC News. “We were very disappointed with the decision to ban the wearing of the thin blue line patch. It’s a symbol of great importance to our members and it speaks to a number of important issues, including remembrance for our fallen, a show of support to one another and a very difficult job, which has long- and short-term health implications for our members,” Orr told CBC. The Calgary Police Commission as well as critics of the symbol—a Canadian flag on a black and …