(Reuters) - A U.S. appeals court panel sounded unconvinced on Wednesday that a Colorado high school student's anti-Semitic Snapchat post created sufficient disruption at his school to warrant his expulsion, in the latest case to test the limits of students' free speech rights. During oral arguments, members of the three-judge 10th U.S. Circuit Court of Appeals panel said there was no evidence the offensive post, which the student made outside of school, caused any students to miss school or disrupted any classes at Cherry Creek High School, a public school in the Denver suburb Greenwood Village. The student identified as...