Tim Revell / Dispatch Some Ohio State students found ways to get their political points across last week at commencement. President Bush was the speaker. Ohio State University's high-profile commencement last week continues to grab national attention. But not the kind the university wants. Held in Ohio Stadium with President Bush as speaker, the event has become a rallying cry for free-speech protection. Ohio State has received more than 1,000 e-mails criticizing its handling of graduation -- mostly complaints that officials tried to silence protesters and took a blatantly pro-Bush stance. University spokesmen say the cyber chatter has spun out...