DULUTH, MN (KDAL) - The Duluth Area Chamber of Commerce is hoping business leaders will send a strong message to the Last Place On Earth by showing up at Friday's court hearing.  The City of Duluth has filed a motion for an injunction against the downtown shop that sells synthetic marijuana and other drugs.  The hearing is set for 10 a-m in Judge Floerke's Courtroom on the 3rd floor of the St. Louis County Courthouse.  Chamber President David Ross says it's time for the community to stand together against "this scourge upon our community".