COLUMBIA, S.C. — The video showed children waving arms rhythmically as a Christian rapper called B-SHOC performs on stage in a darkened gym. The rapper is seen joking earlier in the footage about how "too much fog" at a rehearsal for the same event triggered a school fire alarm. On the recording, B-SHOC openly muses whether firefighters might show up and whether they might be "churchgoers, Jesus lovers."Now a Wisconsin-based group called the Freedom from Religion Foundation is protesting that the rapper called B-SHOC was part of a Christian-theme prayer rally they say was improperly held at a public middle school in the small South Carolina town of Jefferson on Sept.