A Waldorf teenager and his family said yesterday that his high school owes him an apology because he was denied his high school diploma when he wore a bolo tie to his recent graduation. Thomas Benya, 17, and his parents, who are of Cherokee descent, said school officials at McDonough High School in Charles County, Md., disrespected him and degraded his family's heritage when they did not give him his diploma because of his bolo. School officials have said the bolo violated the school's graduation dress code. "I would like to be given my diploma by [the principal] in a...