The Canadian Press First Nations chiefs in Manitoba are calling for Prime Minister Justin Trudeau to rescind the appointment of veteran broadcaster Charles Adler to the Senate. The Assembly of Manitoba Chiefs says Adler’s past comments toward Indigenous Peoples are “grossly offensive” and perpetuate stereotypes. In 1999, while working on a radio show in Winnipeg, Adler called Indigenous leaders “uncivilized boneheads” and “intellectually moribund,” among other names. Grand Chief Cathy Merrick questioned how Adler, who was appointed to the Senate to represent Manitoba on Trudeau’s advice on Saturday, could advocate for First Nations in a respectful way given his previous words. “For comments like that to be made from someone that is going to be appointed into the Senate is not acceptable because you carry those thoughts,” she said. “It…