BOSTON - John Kerry (news - web sites) waved a palm with his left hand during Sunday church service as the Democratic presidential candidate made his first public appearance since having surgery to on his right shoulder. Kerry, a Massachusetts senator, did not speak to the congregation at Charles Street AME Church, but the Rev. Gregory Groover recognized him from the pulpit as "the next president of the United States." "We're thankful that there's going to be a revolution in this country," Groover said. "A new day has occurred, a new movement. And so we praise God for the...