Liberals fly their colors, by Mike Rosen It was two years ago that North High School was the center of controversy over a foreign flag. A Mexican flag was given equal prominence with an American flag in a permanent wall display in the school lobby and in a social studies classroom. The teacher who hung the Mexican flag in his classroom said he wanted his students to feel welcome. This was a nice sentiment, but a direct violation of Colorado law. Although North High is almost 85 percent Hispanic, this is still an American school in the United States, funded...